Add DT Binding doc for the Unique ID of i.MX 8M series.
Signed-off-by: Alice Guo <[email protected]>
---
v2: remove the subject prefix "LF-2571-1"
v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
modify the description of nvmem-cells
use "make ARCH=arm64 dtbs_check" to test it and fix errors
v4: use allOf to limit new version DTS files for i.MX8M to include
"fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
v5: correct the error of using allOf
v6: none
.../devicetree/bindings/arm/fsl.yaml | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index 67980dcef66d..7132ffd41abb 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -918,6 +918,53 @@ properties:
- fsl,s32v234-evb # S32V234-EVB2 Customer Evaluation Board
- const: fsl,s32v234
+ soc:
+ type: object
+ properties:
+ compatible:
+ oneOf:
+ - description: new version compatible for i.MX8M SoCs
+ items:
+ - enum:
+ - fsl,imx8mm-soc
+ - fsl,imx8mn-soc
+ - fsl,imx8mp-soc
+ - fsl,imx8mq-soc
+ - const: simple-bus
+
+ - description: old version compatible for i.MX8M SoCs
+ items:
+ - const: simple-bus
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx8mm
+ - fsl,imx8mn
+ - fsl,imx8mp
+ - fsl,imx8mq
+
+ then:
+ patternProperties:
+ "^soc@[0-9a-f]+$":
+ properties:
+ compatible:
+ items:
+ - enum:
+ - fsl,imx8mm-soc
+ - fsl,imx8mn-soc
+ - fsl,imx8mp-soc
+ - fsl,imx8mq-soc
+ - const: simple-bus
+
+ required:
+ - compatible
+ - nvmem-cells
+ - nvmem-cell-names
+
additionalProperties: true
...
--
2.17.1
Directly reading ocotp register depends on that bootloader enables ocotp
clk, which is not always effective, so change to use nvmem API. Using
nvmem API requires to support driver defer probe and thus change
soc-imx8m.c to use platform driver.
The other reason is that directly reading ocotp register causes kexec
kernel hang because the 1st kernel running will disable unused clks
after kernel boots up, and then ocotp clk will be disabled even if
bootloader enables it. When kexec kernel, ocotp clk needs to be enabled
before reading ocotp registers, and nvmem API with platform driver
supported can accomplish this.
Signed-off-by: Alice Guo <[email protected]>
---
v2: remove the subject prefix "LF-2571-4"
v3: Keep the original way which uses device_initcall to read soc unique
ID, and add the other way which uses module_platform_driver and
nvmem API, so that it will not break the old version DTBs.
v4: delete "__maybe_unused"
delete MODULE_DEVICE_TABLE(of, imx8m_soc_match);
rename match table, "fsl,imx8mm/n/q/p" is actually a machine
compabile and "fsl,imx8mm/n/q/p-soc" is a compabile of soc@0
delete "flag" and change to determine whether the pointer is NULL
ues of_find_matching_node_and_match()
delete of_match_ptr()
v5: add cleanup part "of_node_put"
add note to explain that why device_initcall still exists
v6: none
drivers/soc/imx/soc-imx8m.c | 87 ++++++++++++++++++++++++++++++++-----
1 file changed, 75 insertions(+), 12 deletions(-)
diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
index cc57a384d74d..250530177920 100644
--- a/drivers/soc/imx/soc-imx8m.c
+++ b/drivers/soc/imx/soc-imx8m.c
@@ -5,6 +5,8 @@
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/nvmem-consumer.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
@@ -29,7 +31,7 @@
struct imx8_soc_data {
char *name;
- u32 (*soc_revision)(void);
+ u32 (*soc_revision)(struct device *dev);
};
static u64 soc_uid;
@@ -50,7 +52,7 @@ static u32 imx8mq_soc_revision_from_atf(void)
static inline u32 imx8mq_soc_revision_from_atf(void) { return 0; };
#endif
-static u32 __init imx8mq_soc_revision(void)
+static u32 __init imx8mq_soc_revision(struct device *dev)
{
struct device_node *np;
void __iomem *ocotp_base;
@@ -75,9 +77,20 @@ static u32 __init imx8mq_soc_revision(void)
rev = REV_B1;
}
- soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
- soc_uid <<= 32;
- soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
+ if (dev) {
+ int ret = 0;
+
+ ret = nvmem_cell_read_u64(dev, "soc_unique_id", &soc_uid);
+ if (ret) {
+ iounmap(ocotp_base);
+ of_node_put(np);
+ return ret;
+ }
+ } else {
+ soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
+ soc_uid <<= 32;
+ soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
+ }
iounmap(ocotp_base);
of_node_put(np);
@@ -107,7 +120,7 @@ static void __init imx8mm_soc_uid(void)
of_node_put(np);
}
-static u32 __init imx8mm_soc_revision(void)
+static u32 __init imx8mm_soc_revision(struct device *dev)
{
struct device_node *np;
void __iomem *anatop_base;
@@ -125,7 +138,15 @@ static u32 __init imx8mm_soc_revision(void)
iounmap(anatop_base);
of_node_put(np);
- imx8mm_soc_uid();
+ if (dev) {
+ int ret = 0;
+
+ ret = nvmem_cell_read_u64(dev, "soc_unique_id", &soc_uid);
+ if (ret)
+ return ret;
+ } else {
+ imx8mm_soc_uid();
+ }
return rev;
}
@@ -150,7 +171,7 @@ static const struct imx8_soc_data imx8mp_soc_data = {
.soc_revision = imx8mm_soc_revision,
};
-static __maybe_unused const struct of_device_id imx8_soc_match[] = {
+static const struct of_device_id imx8_machine_match[] = {
{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
{ .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
{ .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
@@ -158,12 +179,20 @@ static __maybe_unused const struct of_device_id imx8_soc_match[] = {
{ }
};
+static const struct of_device_id imx8_soc_match[] = {
+ { .compatible = "fsl,imx8mq-soc", .data = &imx8mq_soc_data, },
+ { .compatible = "fsl,imx8mm-soc", .data = &imx8mm_soc_data, },
+ { .compatible = "fsl,imx8mn-soc", .data = &imx8mn_soc_data, },
+ { .compatible = "fsl,imx8mp-soc", .data = &imx8mp_soc_data, },
+ { }
+};
+
#define imx8_revision(soc_rev) \
soc_rev ? \
kasprintf(GFP_KERNEL, "%d.%d", (soc_rev >> 4) & 0xf, soc_rev & 0xf) : \
"unknown"
-static int __init imx8_soc_init(void)
+static int imx8_soc_info(struct platform_device *pdev)
{
struct soc_device_attribute *soc_dev_attr;
struct soc_device *soc_dev;
@@ -182,7 +211,10 @@ static int __init imx8_soc_init(void)
if (ret)
goto free_soc;
- id = of_match_node(imx8_soc_match, of_root);
+ if (pdev)
+ id = of_match_node(imx8_soc_match, pdev->dev.of_node);
+ else
+ id = of_match_node(imx8_machine_match, of_root);
if (!id) {
ret = -ENODEV;
goto free_soc;
@@ -191,8 +223,16 @@ static int __init imx8_soc_init(void)
data = id->data;
if (data) {
soc_dev_attr->soc_id = data->name;
- if (data->soc_revision)
- soc_rev = data->soc_revision();
+ if (data->soc_revision) {
+ if (pdev) {
+ soc_rev = data->soc_revision(&pdev->dev);
+ ret = soc_rev;
+ if (ret < 0)
+ goto free_soc;
+ } else {
+ soc_rev = data->soc_revision(NULL);
+ }
+ }
}
soc_dev_attr->revision = imx8_revision(soc_rev);
@@ -230,4 +270,27 @@ static int __init imx8_soc_init(void)
kfree(soc_dev_attr);
return ret;
}
+
+/* Retain device_initcall is for backward compatibility with DTS. */
+static int __init imx8_soc_init(void)
+{
+ int ret = 0;
+
+ if (of_find_matching_node_and_match(NULL, imx8_soc_match, NULL))
+ return 0;
+
+ ret = imx8_soc_info(NULL);
+ return ret;
+}
device_initcall(imx8_soc_init);
+
+static struct platform_driver imx8_soc_info_driver = {
+ .probe = imx8_soc_info,
+ .driver = {
+ .name = "imx8_soc_info",
+ .of_match_table = imx8_soc_match,
+ },
+};
+
+module_platform_driver(imx8_soc_info_driver);
+MODULE_LICENSE("GPL v2");
--
2.17.1
On Tue, Nov 24, 2020 at 09:59:46AM +0800, Alice Guo wrote:
> Add DT Binding doc for the Unique ID of i.MX 8M series.
>
> Signed-off-by: Alice Guo <[email protected]>
I already reviewed it.
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
> ---
>
> v2: remove the subject prefix "LF-2571-1"
> v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
> modify the description of nvmem-cells
> use "make ARCH=arm64 dtbs_check" to test it and fix errors
> v4: use allOf to limit new version DTS files for i.MX8M to include
> "fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
> v5: correct the error of using allOf
> v6: none
>
> .../devicetree/bindings/arm/fsl.yaml | 47 +++++++++++++++++++
> 1 file changed, 47 insertions(+)
On Tue, Nov 24, 2020 at 09:59:49AM +0800, Alice Guo wrote:
> Directly reading ocotp register depends on that bootloader enables ocotp
> clk, which is not always effective, so change to use nvmem API. Using
> nvmem API requires to support driver defer probe and thus change
> soc-imx8m.c to use platform driver.
>
> The other reason is that directly reading ocotp register causes kexec
> kernel hang because the 1st kernel running will disable unused clks
> after kernel boots up, and then ocotp clk will be disabled even if
> bootloader enables it. When kexec kernel, ocotp clk needs to be enabled
> before reading ocotp registers, and nvmem API with platform driver
> supported can accomplish this.
>
> Signed-off-by: Alice Guo <[email protected]>
I already reviewed it. You skipped all my review tags from v5.
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
> ---
>
> v2: remove the subject prefix "LF-2571-4"
> v3: Keep the original way which uses device_initcall to read soc unique
> ID, and add the other way which uses module_platform_driver and
> nvmem API, so that it will not break the old version DTBs.
> v4: delete "__maybe_unused"
> delete MODULE_DEVICE_TABLE(of, imx8m_soc_match);
> rename match table, "fsl,imx8mm/n/q/p" is actually a machine
> compabile and "fsl,imx8mm/n/q/p-soc" is a compabile of soc@0
> delete "flag" and change to determine whether the pointer is NULL
> ues of_find_matching_node_and_match()
> delete of_match_ptr()
> v5: add cleanup part "of_node_put"
> add note to explain that why device_initcall still exists
> v6: none
On Mon, Nov 23, 2020 at 8:04 PM Alice Guo <[email protected]> wrote:
>
> Directly reading ocotp register depends on that bootloader enables ocotp
> clk, which is not always effective, so change to use nvmem API. Using
> nvmem API requires to support driver defer probe and thus change
> soc-imx8m.c to use platform driver.
>
> The other reason is that directly reading ocotp register causes kexec
> kernel hang because the 1st kernel running will disable unused clks
> after kernel boots up, and then ocotp clk will be disabled even if
> bootloader enables it. When kexec kernel, ocotp clk needs to be enabled
> before reading ocotp registers, and nvmem API with platform driver
> supported can accomplish this.
>
> Signed-off-by: Alice Guo <[email protected]>
> ---
>
The patch reads V6, but the change log only shows V2. Can you
elaborate on what has changed between V2 and V6?
adam
> v2: remove the subject prefix "LF-2571-4"
> v3: Keep the original way which uses device_initcall to read soc unique
> ID, and add the other way which uses module_platform_driver and
> nvmem API, so that it will not break the old version DTBs.
> v4: delete "__maybe_unused"
> delete MODULE_DEVICE_TABLE(of, imx8m_soc_match);
> rename match table, "fsl,imx8mm/n/q/p" is actually a machine
> compabile and "fsl,imx8mm/n/q/p-soc" is a compabile of soc@0
> delete "flag" and change to determine whether the pointer is NULL
> ues of_find_matching_node_and_match()
> delete of_match_ptr()
> v5: add cleanup part "of_node_put"
> add note to explain that why device_initcall still exists
> v6: none
>
> drivers/soc/imx/soc-imx8m.c | 87 ++++++++++++++++++++++++++++++++-----
> 1 file changed, 75 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
> index cc57a384d74d..250530177920 100644
> --- a/drivers/soc/imx/soc-imx8m.c
> +++ b/drivers/soc/imx/soc-imx8m.c
> @@ -5,6 +5,8 @@
>
> #include <linux/init.h>
> #include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/nvmem-consumer.h>
> #include <linux/of_address.h>
> #include <linux/slab.h>
> #include <linux/sys_soc.h>
> @@ -29,7 +31,7 @@
>
> struct imx8_soc_data {
> char *name;
> - u32 (*soc_revision)(void);
> + u32 (*soc_revision)(struct device *dev);
> };
>
> static u64 soc_uid;
> @@ -50,7 +52,7 @@ static u32 imx8mq_soc_revision_from_atf(void)
> static inline u32 imx8mq_soc_revision_from_atf(void) { return 0; };
> #endif
>
> -static u32 __init imx8mq_soc_revision(void)
> +static u32 __init imx8mq_soc_revision(struct device *dev)
> {
> struct device_node *np;
> void __iomem *ocotp_base;
> @@ -75,9 +77,20 @@ static u32 __init imx8mq_soc_revision(void)
> rev = REV_B1;
> }
>
> - soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
> - soc_uid <<= 32;
> - soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
> + if (dev) {
> + int ret = 0;
> +
> + ret = nvmem_cell_read_u64(dev, "soc_unique_id", &soc_uid);
> + if (ret) {
> + iounmap(ocotp_base);
> + of_node_put(np);
> + return ret;
> + }
> + } else {
> + soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
> + soc_uid <<= 32;
> + soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
> + }
>
> iounmap(ocotp_base);
> of_node_put(np);
> @@ -107,7 +120,7 @@ static void __init imx8mm_soc_uid(void)
> of_node_put(np);
> }
>
> -static u32 __init imx8mm_soc_revision(void)
> +static u32 __init imx8mm_soc_revision(struct device *dev)
> {
> struct device_node *np;
> void __iomem *anatop_base;
> @@ -125,7 +138,15 @@ static u32 __init imx8mm_soc_revision(void)
> iounmap(anatop_base);
> of_node_put(np);
>
> - imx8mm_soc_uid();
> + if (dev) {
> + int ret = 0;
> +
> + ret = nvmem_cell_read_u64(dev, "soc_unique_id", &soc_uid);
> + if (ret)
> + return ret;
> + } else {
> + imx8mm_soc_uid();
> + }
>
> return rev;
> }
> @@ -150,7 +171,7 @@ static const struct imx8_soc_data imx8mp_soc_data = {
> .soc_revision = imx8mm_soc_revision,
> };
>
> -static __maybe_unused const struct of_device_id imx8_soc_match[] = {
> +static const struct of_device_id imx8_machine_match[] = {
> { .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
> { .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
> { .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
> @@ -158,12 +179,20 @@ static __maybe_unused const struct of_device_id imx8_soc_match[] = {
> { }
> };
>
> +static const struct of_device_id imx8_soc_match[] = {
> + { .compatible = "fsl,imx8mq-soc", .data = &imx8mq_soc_data, },
> + { .compatible = "fsl,imx8mm-soc", .data = &imx8mm_soc_data, },
> + { .compatible = "fsl,imx8mn-soc", .data = &imx8mn_soc_data, },
> + { .compatible = "fsl,imx8mp-soc", .data = &imx8mp_soc_data, },
> + { }
> +};
> +
> #define imx8_revision(soc_rev) \
> soc_rev ? \
> kasprintf(GFP_KERNEL, "%d.%d", (soc_rev >> 4) & 0xf, soc_rev & 0xf) : \
> "unknown"
>
> -static int __init imx8_soc_init(void)
> +static int imx8_soc_info(struct platform_device *pdev)
> {
> struct soc_device_attribute *soc_dev_attr;
> struct soc_device *soc_dev;
> @@ -182,7 +211,10 @@ static int __init imx8_soc_init(void)
> if (ret)
> goto free_soc;
>
> - id = of_match_node(imx8_soc_match, of_root);
> + if (pdev)
> + id = of_match_node(imx8_soc_match, pdev->dev.of_node);
> + else
> + id = of_match_node(imx8_machine_match, of_root);
> if (!id) {
> ret = -ENODEV;
> goto free_soc;
> @@ -191,8 +223,16 @@ static int __init imx8_soc_init(void)
> data = id->data;
> if (data) {
> soc_dev_attr->soc_id = data->name;
> - if (data->soc_revision)
> - soc_rev = data->soc_revision();
> + if (data->soc_revision) {
> + if (pdev) {
> + soc_rev = data->soc_revision(&pdev->dev);
> + ret = soc_rev;
> + if (ret < 0)
> + goto free_soc;
> + } else {
> + soc_rev = data->soc_revision(NULL);
> + }
> + }
> }
>
> soc_dev_attr->revision = imx8_revision(soc_rev);
> @@ -230,4 +270,27 @@ static int __init imx8_soc_init(void)
> kfree(soc_dev_attr);
> return ret;
> }
> +
> +/* Retain device_initcall is for backward compatibility with DTS. */
> +static int __init imx8_soc_init(void)
> +{
> + int ret = 0;
> +
> + if (of_find_matching_node_and_match(NULL, imx8_soc_match, NULL))
> + return 0;
> +
> + ret = imx8_soc_info(NULL);
> + return ret;
> +}
> device_initcall(imx8_soc_init);
> +
> +static struct platform_driver imx8_soc_info_driver = {
> + .probe = imx8_soc_info,
> + .driver = {
> + .name = "imx8_soc_info",
> + .of_match_table = imx8_soc_match,
> + },
> +};
> +
> +module_platform_driver(imx8_soc_info_driver);
> +MODULE_LICENSE("GPL v2");
> --
> 2.17.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
On Wed, 25 Nov 2020 at 01:44, Adam Ford <[email protected]> wrote:
>
> On Mon, Nov 23, 2020 at 8:04 PM Alice Guo <[email protected]> wrote:
> >
> > Directly reading ocotp register depends on that bootloader enables ocotp
> > clk, which is not always effective, so change to use nvmem API. Using
> > nvmem API requires to support driver defer probe and thus change
> > soc-imx8m.c to use platform driver.
> >
> > The other reason is that directly reading ocotp register causes kexec
> > kernel hang because the 1st kernel running will disable unused clks
> > after kernel boots up, and then ocotp clk will be disabled even if
> > bootloader enables it. When kexec kernel, ocotp clk needs to be enabled
> > before reading ocotp registers, and nvmem API with platform driver
> > supported can accomplish this.
> >
> > Signed-off-by: Alice Guo <[email protected]>
> > ---
> >
> The patch reads V6, but the change log only shows V2. Can you
> elaborate on what has changed between V2 and V6?
>
> adam
>
> > v2: remove the subject prefix "LF-2571-4"
> > v3: Keep the original way which uses device_initcall to read soc unique
> > ID, and add the other way which uses module_platform_driver and
> > nvmem API, so that it will not break the old version DTBs.
> > v4: delete "__maybe_unused"
> > delete MODULE_DEVICE_TABLE(of, imx8m_soc_match);
> > rename match table, "fsl,imx8mm/n/q/p" is actually a machine
> > compabile and "fsl,imx8mm/n/q/p-soc" is a compabile of soc@0
> > delete "flag" and change to determine whether the pointer is NULL
> > ues of_find_matching_node_and_match()
> > delete of_match_ptr()
> > v5: add cleanup part "of_node_put"
> > add note to explain that why device_initcall still exists
> > v6: none
Hi Adam,
It says up to v6, just in unnatural order... I was also surprised.
Best regards,
Krzysztof
> -----Original Message-----
> From: linux-arm-kernel <[email protected]> On
> Behalf Of Adam Ford
> Sent: 2020??11??25?? 8:45
> To: Alice Guo <[email protected]>
> Cc: devicetree <[email protected]>; Peng Fan <[email protected]>;
> Sascha Hauer <[email protected]>; Linux Kernel Mailing List
> <[email protected]>; Krzysztof Kozlowski <[email protected]>; Rob
> Herring <[email protected]>; dl-linux-imx <[email protected]>; Shawn Guo
> <[email protected]>; arm-soc <[email protected]>
> Subject: Re: [PATCH v6 4/4] soc: imx8m: change to use platform driver
>
> On Mon, Nov 23, 2020 at 8:04 PM Alice Guo <[email protected]> wrote:
> >
> > Directly reading ocotp register depends on that bootloader enables
> > ocotp clk, which is not always effective, so change to use nvmem API.
> > Using nvmem API requires to support driver defer probe and thus change
> > soc-imx8m.c to use platform driver.
> >
> > The other reason is that directly reading ocotp register causes kexec
> > kernel hang because the 1st kernel running will disable unused clks
> > after kernel boots up, and then ocotp clk will be disabled even if
> > bootloader enables it. When kexec kernel, ocotp clk needs to be
> > enabled before reading ocotp registers, and nvmem API with platform
> > driver supported can accomplish this.
> >
> > Signed-off-by: Alice Guo <[email protected]>
> > ---
> >
> The patch reads V6, but the change log only shows V2. Can you elaborate on
> what has changed between V2 and V6?
>
> adam
Hi,
Sorry. The order of changlog is reversed. Thank Adam for pointing out the problem, and thank Krzysztof for reviewing my patch.
Do I need to resend the patchset with the correct changelog order?
Best regards,
Alice
> > v2: remove the subject prefix "LF-2571-4"
> > v3: Keep the original way which uses device_initcall to read soc unique
> > ID, and add the other way which uses module_platform_driver and
> > nvmem API, so that it will not break the old version DTBs.
> > v4: delete "__maybe_unused"
> > delete MODULE_DEVICE_TABLE(of, imx8m_soc_match);
> > rename match table, "fsl,imx8mm/n/q/p" is actually a machine
> > compabile and "fsl,imx8mm/n/q/p-soc" is a compabile of soc@0
> > delete "flag" and change to determine whether the pointer is NULL
> > ues of_find_matching_node_and_match()
> > delete of_match_ptr()
> > v5: add cleanup part "of_node_put"
> > add note to explain that why device_initcall still exists
> > v6: none
> >
> > drivers/soc/imx/soc-imx8m.c | 87
> > ++++++++++++++++++++++++++++++++-----
> > 1 file changed, 75 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
> > index cc57a384d74d..250530177920 100644
> > --- a/drivers/soc/imx/soc-imx8m.c
> > +++ b/drivers/soc/imx/soc-imx8m.c
> > @@ -5,6 +5,8 @@
> >
> > #include <linux/init.h>
> > #include <linux/io.h>
> > +#include <linux/module.h>
> > +#include <linux/nvmem-consumer.h>
> > #include <linux/of_address.h>
> > #include <linux/slab.h>
> > #include <linux/sys_soc.h>
> > @@ -29,7 +31,7 @@
> >
> > struct imx8_soc_data {
> > char *name;
> > - u32 (*soc_revision)(void);
> > + u32 (*soc_revision)(struct device *dev);
> > };
> >
> > static u64 soc_uid;
> > @@ -50,7 +52,7 @@ static u32 imx8mq_soc_revision_from_atf(void)
> > static inline u32 imx8mq_soc_revision_from_atf(void) { return 0; };
> > #endif
> >
> > -static u32 __init imx8mq_soc_revision(void)
> > +static u32 __init imx8mq_soc_revision(struct device *dev)
> > {
> > struct device_node *np;
> > void __iomem *ocotp_base;
> > @@ -75,9 +77,20 @@ static u32 __init imx8mq_soc_revision(void)
> > rev = REV_B1;
> > }
> >
> > - soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
> > - soc_uid <<= 32;
> > - soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
> > + if (dev) {
> > + int ret = 0;
> > +
> > + ret = nvmem_cell_read_u64(dev, "soc_unique_id",
> &soc_uid);
> > + if (ret) {
> > + iounmap(ocotp_base);
> > + of_node_put(np);
> > + return ret;
> > + }
> > + } else {
> > + soc_uid = readl_relaxed(ocotp_base +
> OCOTP_UID_HIGH);
> > + soc_uid <<= 32;
> > + soc_uid |= readl_relaxed(ocotp_base +
> OCOTP_UID_LOW);
> > + }
> >
> > iounmap(ocotp_base);
> > of_node_put(np);
> > @@ -107,7 +120,7 @@ static void __init imx8mm_soc_uid(void)
> > of_node_put(np);
> > }
> >
> > -static u32 __init imx8mm_soc_revision(void)
> > +static u32 __init imx8mm_soc_revision(struct device *dev)
> > {
> > struct device_node *np;
> > void __iomem *anatop_base;
> > @@ -125,7 +138,15 @@ static u32 __init imx8mm_soc_revision(void)
> > iounmap(anatop_base);
> > of_node_put(np);
> >
> > - imx8mm_soc_uid();
> > + if (dev) {
> > + int ret = 0;
> > +
> > + ret = nvmem_cell_read_u64(dev, "soc_unique_id",
> &soc_uid);
> > + if (ret)
> > + return ret;
> > + } else {
> > + imx8mm_soc_uid();
> > + }
> >
> > return rev;
> > }
> > @@ -150,7 +171,7 @@ static const struct imx8_soc_data imx8mp_soc_data
> = {
> > .soc_revision = imx8mm_soc_revision, };
> >
> > -static __maybe_unused const struct of_device_id imx8_soc_match[] = {
> > +static const struct of_device_id imx8_machine_match[] = {
> > { .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
> > { .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
> > { .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, }, @@
> > -158,12 +179,20 @@ static __maybe_unused const struct of_device_id
> imx8_soc_match[] = {
> > { }
> > };
> >
> > +static const struct of_device_id imx8_soc_match[] = {
> > + { .compatible = "fsl,imx8mq-soc", .data = &imx8mq_soc_data, },
> > + { .compatible = "fsl,imx8mm-soc", .data = &imx8mm_soc_data, },
> > + { .compatible = "fsl,imx8mn-soc", .data = &imx8mn_soc_data, },
> > + { .compatible = "fsl,imx8mp-soc", .data = &imx8mp_soc_data, },
> > + { }
> > +};
> > +
> > #define imx8_revision(soc_rev) \
> > soc_rev ? \
> > kasprintf(GFP_KERNEL, "%d.%d", (soc_rev >> 4) & 0xf, soc_rev &
> 0xf) : \
> > "unknown"
> >
> > -static int __init imx8_soc_init(void)
> > +static int imx8_soc_info(struct platform_device *pdev)
> > {
> > struct soc_device_attribute *soc_dev_attr;
> > struct soc_device *soc_dev;
> > @@ -182,7 +211,10 @@ static int __init imx8_soc_init(void)
> > if (ret)
> > goto free_soc;
> >
> > - id = of_match_node(imx8_soc_match, of_root);
> > + if (pdev)
> > + id = of_match_node(imx8_soc_match,
> pdev->dev.of_node);
> > + else
> > + id = of_match_node(imx8_machine_match, of_root);
> > if (!id) {
> > ret = -ENODEV;
> > goto free_soc;
> > @@ -191,8 +223,16 @@ static int __init imx8_soc_init(void)
> > data = id->data;
> > if (data) {
> > soc_dev_attr->soc_id = data->name;
> > - if (data->soc_revision)
> > - soc_rev = data->soc_revision();
> > + if (data->soc_revision) {
> > + if (pdev) {
> > + soc_rev =
> data->soc_revision(&pdev->dev);
> > + ret = soc_rev;
> > + if (ret < 0)
> > + goto free_soc;
> > + } else {
> > + soc_rev = data->soc_revision(NULL);
> > + }
> > + }
> > }
> >
> > soc_dev_attr->revision = imx8_revision(soc_rev); @@ -230,4
> > +270,27 @@ static int __init imx8_soc_init(void)
> > kfree(soc_dev_attr);
> > return ret;
> > }
> > +
> > +/* Retain device_initcall is for backward compatibility with DTS. */
> > +static int __init imx8_soc_init(void) {
> > + int ret = 0;
> > +
> > + if (of_find_matching_node_and_match(NULL, imx8_soc_match,
> NULL))
> > + return 0;
> > +
> > + ret = imx8_soc_info(NULL);
> > + return ret;
> > +}
> > device_initcall(imx8_soc_init);
> > +
> > +static struct platform_driver imx8_soc_info_driver = {
> > + .probe = imx8_soc_info,
> > + .driver = {
> > + .name = "imx8_soc_info",
> > + .of_match_table = imx8_soc_match,
> > + },
> > +};
> > +
> > +module_platform_driver(imx8_soc_info_driver);
> > +MODULE_LICENSE("GPL v2");
> > --
> > 2.17.1
> >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > [email protected]
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
On Thu, Nov 26, 2020 at 02:15:35AM +0000, Alice Guo wrote:
>
>
> > -----Original Message-----
> > From: linux-arm-kernel <[email protected]> On
> > Behalf Of Adam Ford
> > Sent: 2020年11月25日 8:45
> > To: Alice Guo <[email protected]>
> > Cc: devicetree <[email protected]>; Peng Fan <[email protected]>;
> > Sascha Hauer <[email protected]>; Linux Kernel Mailing List
> > <[email protected]>; Krzysztof Kozlowski <[email protected]>; Rob
> > Herring <[email protected]>; dl-linux-imx <[email protected]>; Shawn Guo
> > <[email protected]>; arm-soc <[email protected]>
> > Subject: Re: [PATCH v6 4/4] soc: imx8m: change to use platform driver
> >
> > On Mon, Nov 23, 2020 at 8:04 PM Alice Guo <[email protected]> wrote:
> > >
> > > Directly reading ocotp register depends on that bootloader enables
> > > ocotp clk, which is not always effective, so change to use nvmem API.
> > > Using nvmem API requires to support driver defer probe and thus change
> > > soc-imx8m.c to use platform driver.
> > >
> > > The other reason is that directly reading ocotp register causes kexec
> > > kernel hang because the 1st kernel running will disable unused clks
> > > after kernel boots up, and then ocotp clk will be disabled even if
> > > bootloader enables it. When kexec kernel, ocotp clk needs to be
> > > enabled before reading ocotp registers, and nvmem API with platform
> > > driver supported can accomplish this.
> > >
> > > Signed-off-by: Alice Guo <[email protected]>
> > > ---
> > >
> > The patch reads V6, but the change log only shows V2. Can you elaborate on
> > what has changed between V2 and V6?
> >
> > adam
>
> Hi,
>
> Sorry. The order of changlog is reversed. Thank Adam for pointing out the problem, and thank Krzysztof for reviewing my patch.
> Do I need to resend the patchset with the correct changelog order?
No, no need.
Best regards,
Krzysztof
On Tue, Nov 24, 2020 at 09:59:46AM +0800, Alice Guo wrote:
> Add DT Binding doc for the Unique ID of i.MX 8M series.
>
> Signed-off-by: Alice Guo <[email protected]>
> ---
>
> v2: remove the subject prefix "LF-2571-1"
> v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
No, I prefer this be a separate schema file and not clutter board/soc
schemas with child nodes.
> modify the description of nvmem-cells
> use "make ARCH=arm64 dtbs_check" to test it and fix errors
> v4: use allOf to limit new version DTS files for i.MX8M to include
> "fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
> v5: correct the error of using allOf
> v6: none
>
> .../devicetree/bindings/arm/fsl.yaml | 47 +++++++++++++++++++
> 1 file changed, 47 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
> index 67980dcef66d..7132ffd41abb 100644
> --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> @@ -918,6 +918,53 @@ properties:
> - fsl,s32v234-evb # S32V234-EVB2 Customer Evaluation Board
> - const: fsl,s32v234
>
> + soc:
> + type: object
> + properties:
> + compatible:
> + oneOf:
> + - description: new version compatible for i.MX8M SoCs
> + items:
> + - enum:
> + - fsl,imx8mm-soc
> + - fsl,imx8mn-soc
> + - fsl,imx8mp-soc
> + - fsl,imx8mq-soc
> + - const: simple-bus
> +
> + - description: old version compatible for i.MX8M SoCs
> + items:
> + - const: simple-bus
Fix your dts files and drop this.
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - fsl,imx8mm
> + - fsl,imx8mn
> + - fsl,imx8mp
> + - fsl,imx8mq
> +
> + then:
> + patternProperties:
> + "^soc@[0-9a-f]+$":
And this is just wrong. First you say the node is 'soc' and then here it
has a unit address.
> + properties:
> + compatible:
> + items:
> + - enum:
> + - fsl,imx8mm-soc
> + - fsl,imx8mn-soc
> + - fsl,imx8mp-soc
> + - fsl,imx8mq-soc
> + - const: simple-bus
> +
> + required:
> + - compatible
> + - nvmem-cells
> + - nvmem-cell-names
> +
> additionalProperties: true
>
> ...
> --
> 2.17.1
>
> -----Original Message-----
> From: linux-arm-kernel <[email protected]> On
> Behalf Of Rob Herring
> Sent: 2020??12??1?? 5:57
> To: Alice Guo <[email protected]>
> Cc: [email protected]; Peng Fan <[email protected]>;
> [email protected]; [email protected]; [email protected];
> dl-linux-imx <[email protected]>; [email protected];
> [email protected]
> Subject: Re: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc
> unique ID
>
> On Tue, Nov 24, 2020 at 09:59:46AM +0800, Alice Guo wrote:
> > Add DT Binding doc for the Unique ID of i.MX 8M series.
> >
> > Signed-off-by: Alice Guo <[email protected]>
> > ---
> >
> > v2: remove the subject prefix "LF-2571-1"
> > v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
>
> No, I prefer this be a separate schema file and not clutter board/soc schemas
> with child nodes.
Hi,
Thank you for your comments. I read "Documentation/devicetree/bindings/arm/arm,realview.yaml"
in which there is a "soc". So I added my "soc" to this current file. Can I keep it in Documentation/devicetree/bindings/arm/fsl.yaml?
> > modify the description of nvmem-cells
> > use "make ARCH=arm64 dtbs_check" to test it and fix errors
> > v4: use allOf to limit new version DTS files for i.MX8M to include
> > "fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
> > v5: correct the error of using allOf
> > v6: none
> >
> > .../devicetree/bindings/arm/fsl.yaml | 47
> +++++++++++++++++++
> > 1 file changed, 47 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml
> > b/Documentation/devicetree/bindings/arm/fsl.yaml
> > index 67980dcef66d..7132ffd41abb 100644
> > --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> > +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> > @@ -918,6 +918,53 @@ properties:
> > - fsl,s32v234-evb # S32V234-EVB2 Customer
> Evaluation Board
> > - const: fsl,s32v234
> >
> > + soc:
> > + type: object
> > + properties:
> > + compatible:
> > + oneOf:
> > + - description: new version compatible for i.MX8M SoCs
> > + items:
> > + - enum:
> > + - fsl,imx8mm-soc
> > + - fsl,imx8mn-soc
> > + - fsl,imx8mp-soc
> > + - fsl,imx8mq-soc
> > + - const: simple-bus
> > +
> > + - description: old version compatible for i.MX8M SoCs
> > + items:
> > + - const: simple-bus
>
> Fix your dts files and drop this.
My changes are below.
>
> > +
> > +allOf:
> > + - if:
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - fsl,imx8mm
> > + - fsl,imx8mn
> > + - fsl,imx8mp
> > + - fsl,imx8mq
> > +
> > + then:
> > + patternProperties:
> > + "^soc@[0-9a-f]+$":
>
> And this is just wrong. First you say the node is 'soc' and then here it has a unit
> address.
Here are my changes. I deleted the section from "soc:" to "- const: simple bus". Please help me to see if they are correct and workable. Thank you.
allOf:
- if:
properties:
compatible:
contains:
enum:
- fsl,imx8mm
- fsl,imx8mn
- fsl,imx8mp
- fsl,imx8mq
then:
patternProperties:
"^soc@[0-9a-f]+$":
properties:
compatible:
items:
- enum:
- fsl,imx8mm-soc
- fsl,imx8mn-soc
- fsl,imx8mp-soc
- fsl,imx8mq-soc
- const: simple-bus
required:
- compatible
- nvmem-cells
- nvmem-cell-names
Best Regards,
Alice Guo
>
> > + properties:
> > + compatible:
> > + items:
> > + - enum:
> > + - fsl,imx8mm-soc
> > + - fsl,imx8mn-soc
> > + - fsl,imx8mp-soc
> > + - fsl,imx8mq-soc
> > + - const: simple-bus
> > +
> > + required:
> > + - compatible
> > + - nvmem-cells
> > + - nvmem-cell-names
> > +
> > additionalProperties: true
> >
> > ...
> > --
> > 2.17.1
> >
>
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Hi Alice,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on robh/for-next]
[also build test WARNING on v5.10-rc6 next-20201201]
[cannot apply to shawnguo/for-next krzk/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Alice-Guo/dt-bindings-soc-imx8m-add-DT-Binding-doc-for-soc-unique-ID/20201124-100402
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: mips-randconfig-r026-20201201 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 2671fccf0381769276ca8246ec0499adcb9b0355)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://github.com/0day-ci/linux/commit/410e3191d62767ba3d347a48d38ad3bd00bee387
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Alice-Guo/dt-bindings-soc-imx8m-add-DT-Binding-doc-for-soc-unique-ID/20201124-100402
git checkout 410e3191d62767ba3d347a48d38ad3bd00bee387
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
All warnings (new ones prefixed by >>):
>> drivers/soc/imx/soc-imx8m.c:174:34: warning: unused variable 'imx8_machine_match' [-Wunused-const-variable]
static const struct of_device_id imx8_machine_match[] = {
^
1 warning generated.
vim +/imx8_machine_match +174 drivers/soc/imx/soc-imx8m.c
173
> 174 static const struct of_device_id imx8_machine_match[] = {
175 { .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
176 { .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
177 { .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
178 { .compatible = "fsl,imx8mp", .data = &imx8mp_soc_data, },
179 { }
180 };
181
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]
Gentle ping.. and Krzysztof Kozlowski, do you agree?
Best Regards,
Alice Guo
> -----Original Message-----
> From: linux-arm-kernel <[email protected]> On
> Behalf Of Alice Guo (OSS)
> Sent: 2020??12??1?? 11:31
> To: Rob Herring <[email protected]>; Krzysztof Kozlowski <[email protected]>;
> [email protected]
> Cc: [email protected]; Peng Fan <[email protected]>;
> [email protected]; [email protected]; [email protected];
> dl-linux-imx <[email protected]>; [email protected]
> Subject: RE: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc
> unique ID
>
>
>
> > -----Original Message-----
> > From: linux-arm-kernel <[email protected]>
> > On Behalf Of Rob Herring
> > Sent: 2020??12??1?? 5:57
> > To: Alice Guo <[email protected]>
> > Cc: [email protected]; Peng Fan <[email protected]>;
> > [email protected]; [email protected]; [email protected];
> > dl-linux-imx <[email protected]>; [email protected];
> > [email protected]
> > Subject: Re: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding
> > doc for soc unique ID
> >
> > On Tue, Nov 24, 2020 at 09:59:46AM +0800, Alice Guo wrote:
> > > Add DT Binding doc for the Unique ID of i.MX 8M series.
> > >
> > > Signed-off-by: Alice Guo <[email protected]>
> > > ---
> > >
> > > v2: remove the subject prefix "LF-2571-1"
> > > v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
> >
> > No, I prefer this be a separate schema file and not clutter board/soc
> > schemas with child nodes.
>
> Hi,
> Thank you for your comments. I read
> "Documentation/devicetree/bindings/arm/arm,realview.yaml"
> in which there is a "soc". So I added my "soc" to this current file. Can I keep it in
> Documentation/devicetree/bindings/arm/fsl.yaml?
>
> > > modify the description of nvmem-cells
> > > use "make ARCH=arm64 dtbs_check" to test it and fix errors
> > > v4: use allOf to limit new version DTS files for i.MX8M to include
> > > "fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
> > > v5: correct the error of using allOf
> > > v6: none
> > >
> > > .../devicetree/bindings/arm/fsl.yaml | 47
> > +++++++++++++++++++
> > > 1 file changed, 47 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml
> > > b/Documentation/devicetree/bindings/arm/fsl.yaml
> > > index 67980dcef66d..7132ffd41abb 100644
> > > --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> > > +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> > > @@ -918,6 +918,53 @@ properties:
> > > - fsl,s32v234-evb # S32V234-EVB2 Customer
> > Evaluation Board
> > > - const: fsl,s32v234
> > >
> > > + soc:
> > > + type: object
> > > + properties:
> > > + compatible:
> > > + oneOf:
> > > + - description: new version compatible for i.MX8M SoCs
> > > + items:
> > > + - enum:
> > > + - fsl,imx8mm-soc
> > > + - fsl,imx8mn-soc
> > > + - fsl,imx8mp-soc
> > > + - fsl,imx8mq-soc
> > > + - const: simple-bus
> > > +
> > > + - description: old version compatible for i.MX8M SoCs
> > > + items:
> > > + - const: simple-bus
> >
> > Fix your dts files and drop this.
>
> My changes are below.
>
> >
> > > +
> > > +allOf:
> > > + - if:
> > > + properties:
> > > + compatible:
> > > + contains:
> > > + enum:
> > > + - fsl,imx8mm
> > > + - fsl,imx8mn
> > > + - fsl,imx8mp
> > > + - fsl,imx8mq
> > > +
> > > + then:
> > > + patternProperties:
> > > + "^soc@[0-9a-f]+$":
> >
> > And this is just wrong. First you say the node is 'soc' and then here
> > it has a unit address.
>
> Here are my changes. I deleted the section from "soc:" to "- const: simple bus".
> Please help me to see if they are correct and workable. Thank you.
> allOf:
> - if:
> properties:
> compatible:
> contains:
> enum:
> - fsl,imx8mm
> - fsl,imx8mn
> - fsl,imx8mp
> - fsl,imx8mq
>
> then:
> patternProperties:
> "^soc@[0-9a-f]+$":
> properties:
> compatible:
> items:
> - enum:
> - fsl,imx8mm-soc
> - fsl,imx8mn-soc
> - fsl,imx8mp-soc
> - fsl,imx8mq-soc
> - const: simple-bus
>
> required:
> - compatible
> - nvmem-cells
> - nvmem-cell-names
>
> Best Regards,
> Alice Guo
>
>
> >
> > > + properties:
> > > + compatible:
> > > + items:
> > > + - enum:
> > > + - fsl,imx8mm-soc
> > > + - fsl,imx8mn-soc
> > > + - fsl,imx8mp-soc
> > > + - fsl,imx8mq-soc
> > > + - const: simple-bus
> > > +
> > > + required:
> > > + - compatible
> > > + - nvmem-cells
> > > + - nvmem-cell-names
> > > +
> > > additionalProperties: true
> > >
> > > ...
> > > --
> > > 2.17.1
> > >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > [email protected]
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
On Wed, Dec 09, 2020 at 02:30:22AM +0000, Alice Guo (OSS) wrote:
> Gentle ping.. and Krzysztof Kozlowski, do you agree?
I did not know that you wait for something from my side.
>
> Best Regards,
> Alice Guo
>
> > -----Original Message-----
> > From: linux-arm-kernel <[email protected]> On
> > Behalf Of Alice Guo (OSS)
> > Sent: 2020年12月1日 11:31
> > To: Rob Herring <[email protected]>; Krzysztof Kozlowski <[email protected]>;
> > [email protected]
> > Cc: [email protected]; Peng Fan <[email protected]>;
> > [email protected]; [email protected]; [email protected];
> > dl-linux-imx <[email protected]>; [email protected]
> > Subject: RE: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc
> > unique ID
> >
> >
> >
> > > -----Original Message-----
> > > From: linux-arm-kernel <[email protected]>
> > > On Behalf Of Rob Herring
> > > Sent: 2020年12月1日 5:57
> > > To: Alice Guo <[email protected]>
> > > Cc: [email protected]; Peng Fan <[email protected]>;
> > > [email protected]; [email protected]; [email protected];
> > > dl-linux-imx <[email protected]>; [email protected];
> > > [email protected]
> > > Subject: Re: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding
> > > doc for soc unique ID
> > >
> > > On Tue, Nov 24, 2020 at 09:59:46AM +0800, Alice Guo wrote:
> > > > Add DT Binding doc for the Unique ID of i.MX 8M series.
> > > >
> > > > Signed-off-by: Alice Guo <[email protected]>
> > > > ---
> > > >
> > > > v2: remove the subject prefix "LF-2571-1"
> > > > v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
> > >
> > > No, I prefer this be a separate schema file and not clutter board/soc
> > > schemas with child nodes.
> >
> > Hi,
> > Thank you for your comments. I read
> > "Documentation/devicetree/bindings/arm/arm,realview.yaml"
> > in which there is a "soc". So I added my "soc" to this current file. Can I keep it in
> > Documentation/devicetree/bindings/arm/fsl.yaml?
Please go with Rob's suggestion.
Best regards,
Krzysztof