v4 changes:
dts:
1. remove phandle from socinfo-data for all platforms
mtk-socinfo.c:
1. use module_platform_driver instead of builtin_platform_driver
drivers/soc/mediatek/Kconfig:
1. add dependency for MTK_SOCINFO
mtk-efuse.c:
1. add remove function
commit message:
1. update commit message by following reviewer's comment
William-tw Lin (3):
arm64: dts: mediatek: Add socinfo efuses to MT8173/83/96/92/95 SoCs
soc: mediatek: mtk-socinfo: Add driver for getting chip information
nvmem: mtk-efuse: Register MediaTek socinfo driver from efuse
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 9 ++
arch/arm64/boot/dts/mediatek/mt8183.dtsi | 9 ++
arch/arm64/boot/dts/mediatek/mt8186.dtsi | 4 +
arch/arm64/boot/dts/mediatek/mt8192.dtsi | 8 +
arch/arm64/boot/dts/mediatek/mt8195.dtsi | 3 +
drivers/nvmem/mtk-efuse.c | 21 ++-
drivers/soc/mediatek/Kconfig | 9 ++
drivers/soc/mediatek/Makefile | 1 +
drivers/soc/mediatek/mtk-socinfo.c | 186 +++++++++++++++++++++++
9 files changed, 249 insertions(+), 1 deletion(-)
create mode 100644 drivers/soc/mediatek/mtk-socinfo.c
--
2.18.0
Add efuse nodes for socinfo retrieval for MT8173, MT8183, MT8186,
MT8192 and MT8195.
Signed-off-by: William-tw Lin <[email protected]>
---
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 9 +++++++++
arch/arm64/boot/dts/mediatek/mt8183.dtsi | 9 +++++++++
arch/arm64/boot/dts/mediatek/mt8186.dtsi | 4 ++++
arch/arm64/boot/dts/mediatek/mt8192.dtsi | 8 ++++++++
arch/arm64/boot/dts/mediatek/mt8195.dtsi | 3 +++
5 files changed, 33 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index c47d7d900f28..0f4aab80d5e4 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -590,6 +590,15 @@
reg = <0 0x10206000 0 0x1000>;
#address-cells = <1>;
#size-cells = <1>;
+
+ socinfo-data1@40 {
+ reg = <0x040 0x4>;
+ };
+
+ socinfo-data2@44 {
+ reg = <0x044 0x4>;
+ };
+
thermal_calibration: calib@528 {
reg = <0x528 0xc>;
};
diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 976dc968b3ca..1fe351b710ed 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -1585,6 +1585,15 @@
reg = <0 0x11f10000 0 0x1000>;
#address-cells = <1>;
#size-cells = <1>;
+
+ socinfo-data1@4c {
+ reg = <0x04c 0x4>;
+ };
+
+ socinfo-data2@60 {
+ reg = <0x060 0x4>;
+ };
+
thermal_calibration: calib@180 {
reg = <0x180 0xc>;
};
diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
index df0c04f2ba1d..7dd0ae965ee0 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
@@ -1672,6 +1672,10 @@
reg = <0x59c 0x4>;
bits = <0 3>;
};
+
+ socinfo-data1@7a0 {
+ reg = <0x7a0 0x4>;
+ };
};
mipi_tx0: dsi-phy@11cc0000 {
diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index 69f4cded5dbb..85f2c49be6fc 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -1120,6 +1120,14 @@
#address-cells = <1>;
#size-cells = <1>;
+ socinfo-data1@44 {
+ reg = <0x044 0x4>;
+ };
+
+ socinfo-data2@50 {
+ reg = <0x050 0x4>;
+ };
+
lvts_e_data1: data1@1c0 {
reg = <0x1c0 0x58>;
};
diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index e0ac2e9f5b72..520f7b649cb2 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -1686,6 +1686,9 @@
lvts_efuse_data2: lvts2-calib@1d0 {
reg = <0x1d0 0x38>;
};
+ socinfo-data1@7a0 {
+ reg = <0x7a0 0x4>;
+ };
};
u3phy2: t-phy@11c40000 {
--
2.18.0
Add driver for socinfo retrieval. This patch includes the following:
1. mtk-socinfo driver for chip info retrieval
2. Related changes to Makefile and Kconfig
Signed-off-by: William-tw Lin <[email protected]>
---
drivers/soc/mediatek/Kconfig | 9 ++
drivers/soc/mediatek/Makefile | 1 +
drivers/soc/mediatek/mtk-socinfo.c | 186 +++++++++++++++++++++++++++++
3 files changed, 196 insertions(+)
create mode 100644 drivers/soc/mediatek/mtk-socinfo.c
diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
index 0810b5b0c688..50c664b65f4d 100644
--- a/drivers/soc/mediatek/Kconfig
+++ b/drivers/soc/mediatek/Kconfig
@@ -68,4 +68,13 @@ config MTK_SVS
chip process corner, temperatures and other factors. Then DVFS
driver could apply SVS bank voltage to PMIC/Buck.
+config MTK_SOCINFO
+ tristate "MediaTek SoC Information"
+ default y
+ depends on NVMEM_MTK_EFUSE
+ help
+ The MediaTek SoC Information (mtk-socinfo) driver provides
+ information about the SoC to the userspace including the
+ manufacturer name, marketing name and soc name.
+
endmenu
diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile
index 9d3ce7878c5c..6830512848fd 100644
--- a/drivers/soc/mediatek/Makefile
+++ b/drivers/soc/mediatek/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_MTK_REGULATOR_COUPLER) += mtk-regulator-coupler.o
obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
obj-$(CONFIG_MTK_MMSYS) += mtk-mutex.o
obj-$(CONFIG_MTK_SVS) += mtk-svs.o
+obj-$(CONFIG_MTK_SOCINFO) += mtk-socinfo.o
diff --git a/drivers/soc/mediatek/mtk-socinfo.c b/drivers/soc/mediatek/mtk-socinfo.c
new file mode 100644
index 000000000000..0094f43e1e08
--- /dev/null
+++ b/drivers/soc/mediatek/mtk-socinfo.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 MediaTek Inc.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/string.h>
+#include <linux/sys_soc.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+#define MTK_SOCINFO_ENTRY(_soc_name, _segment_name, _marketing_name, _cell_data1, _cell_data2) {\
+ .soc_name = _soc_name, \
+ .segment_name = _segment_name, \
+ .marketing_name = _marketing_name, \
+ .cell_data = {_cell_data1, _cell_data2} \
+}
+#define CELL_NOT_USED (0xFFFFFFFF)
+#define MAX_CELLS (2)
+
+struct mtk_socinfo {
+ struct device *dev;
+ struct name_data *name_data;
+ struct socinfo_data *socinfo_data;
+ struct soc_device *soc_dev;
+};
+
+struct socinfo_data {
+ char *soc_name;
+ char *segment_name;
+ char *marketing_name;
+ u32 cell_data[MAX_CELLS];
+};
+
+static const char *cell_names[MAX_CELLS] = {"socinfo-data1", "socinfo-data2"};
+
+static struct socinfo_data socinfo_data_table[] = {
+ MTK_SOCINFO_ENTRY("MT8173", "MT8173V/AC", "MT8173", 0x6CA20004, 0x10000000),
+ MTK_SOCINFO_ENTRY("MT8183", "MT8183V/AZA", "Kompanio 500", 0x00010043, 0x00000840),
+ MTK_SOCINFO_ENTRY("MT8186", "MT8186GV/AZA", "Kompanio 520", 0x81861001, CELL_NOT_USED),
+ MTK_SOCINFO_ENTRY("MT8186T", "MT8186TV/AZA", "Kompanio 528", 0x81862001, CELL_NOT_USED),
+ MTK_SOCINFO_ENTRY("MT8188", "MT8188GV/AZA", "Kompanio 830", 0x81880000, 0x00000010),
+ MTK_SOCINFO_ENTRY("MT8188", "MT8188GV/HZA", "Kompanio 830", 0x81880000, 0x00000011),
+ MTK_SOCINFO_ENTRY("MT8192", "MT8192V/AZA", "Kompanio 820", 0x00001100, 0x00040080),
+ MTK_SOCINFO_ENTRY("MT8192T", "MT8192V/ATZA", "Kompanio 828", 0x00000100, 0x000400C0),
+ MTK_SOCINFO_ENTRY("MT8195", "MT8195GV/EZA", "Kompanio 1200", 0x81950300, CELL_NOT_USED),
+ MTK_SOCINFO_ENTRY("MT8195", "MT8195GV/EHZA", "Kompanio 1200", 0x81950304, CELL_NOT_USED),
+ MTK_SOCINFO_ENTRY("MT8195", "MT8195TV/EZA", "Kompanio 1380", 0x81950400, CELL_NOT_USED),
+ MTK_SOCINFO_ENTRY("MT8195", "MT8195TV/EHZA", "Kompanio 1380", 0x81950404, CELL_NOT_USED),
+};
+
+static int mtk_socinfo_create_socinfo_node(struct mtk_socinfo *mtk_socinfop)
+{
+ struct soc_device_attribute *attrs;
+ static char machine[30] = {0};
+ static const char *soc_manufacturer = "MediaTek";
+
+ attrs = devm_kzalloc(mtk_socinfop->dev, sizeof(*attrs), GFP_KERNEL);
+ if (!attrs)
+ return -ENOMEM;
+
+ snprintf(machine, sizeof(machine), "%s (%s)", mtk_socinfop->socinfo_data->marketing_name,
+ mtk_socinfop->socinfo_data->soc_name);
+ attrs->family = soc_manufacturer;
+ attrs->machine = machine;
+
+ mtk_socinfop->soc_dev = soc_device_register(attrs);
+ if (IS_ERR(mtk_socinfop->soc_dev))
+ return PTR_ERR(mtk_socinfop->soc_dev);
+
+ dev_info(mtk_socinfop->dev, "%s %s SoC detected.\n", soc_manufacturer, attrs->machine);
+ return 0;
+}
+
+static u32 mtk_socinfo_read_cell(struct device *dev, const char *name)
+{
+ struct nvmem_device *nvmemp;
+ struct device_node *np = dev->of_node;
+ u32 offset;
+ u32 cell_val = CELL_NOT_USED;
+
+ nvmemp = devm_nvmem_device_get(dev, "mtk-efuse0");
+ if (IS_ERR(nvmemp))
+ goto out;
+
+ np = of_find_node_by_name(NULL, name);
+ if (!np)
+ goto out;
+
+ if (of_property_read_u32_index(np, "reg", 0, &offset))
+ goto out;
+
+ nvmem_device_read(nvmemp, offset, sizeof(cell_val), &cell_val);
+
+ nvmem_device_put(nvmemp);
+
+out:
+ return cell_val;
+}
+
+static int mtk_socinfo_get_socinfo_data(struct mtk_socinfo *mtk_socinfop)
+{
+ unsigned int i, j;
+ unsigned int num_cell_data = 0;
+ u32 cell_data[MAX_CELLS] = {0};
+ bool match_socinfo;
+ int match_socinfo_index = -1;
+
+ for (i = 0; i < MAX_CELLS; i++) {
+ cell_data[i] = mtk_socinfo_read_cell(mtk_socinfop->dev, cell_names[i]);
+ if (cell_data[i] != CELL_NOT_USED)
+ num_cell_data++;
+ else
+ break;
+ }
+
+ if (!num_cell_data)
+ return -ENOENT;
+
+ for (i = 0; i < ARRAY_SIZE(socinfo_data_table); i++) {
+ match_socinfo = true;
+ for (j = 0; j < num_cell_data; j++) {
+ if (cell_data[j] != socinfo_data_table[i].cell_data[j]) {
+ match_socinfo = false;
+ break;
+ }
+ }
+ if (match_socinfo) {
+ mtk_socinfop->socinfo_data = &(socinfo_data_table[i]);
+ match_socinfo_index = i;
+ break;
+ }
+ }
+
+ return match_socinfo_index >= 0 ? match_socinfo_index : -ENOENT;
+}
+
+static int mtk_socinfo_probe(struct platform_device *pdev)
+{
+ struct mtk_socinfo *mtk_socinfop;
+ int ret;
+
+ mtk_socinfop = devm_kzalloc(&pdev->dev, sizeof(*mtk_socinfop), GFP_KERNEL);
+ if (!mtk_socinfop)
+ return -ENOMEM;
+
+ mtk_socinfop->dev = &pdev->dev;
+
+ ret = mtk_socinfo_get_socinfo_data(mtk_socinfop);
+ if (ret < 0)
+ return dev_err_probe(mtk_socinfop->dev, ret, "Failed to get socinfo data\n");
+
+ ret = mtk_socinfo_create_socinfo_node(mtk_socinfop);
+ if (ret)
+ return dev_err_probe(mtk_socinfop->dev, ret, "Cannot create node\n");
+
+ platform_set_drvdata(pdev, mtk_socinfop);
+ return 0;
+}
+
+static void mtk_socinfo_remove(struct platform_device *pdev)
+{
+ struct mtk_socinfo *mtk_socinfop = platform_get_drvdata(pdev);
+
+ soc_device_unregister(mtk_socinfop->soc_dev);
+}
+
+static struct platform_driver mtk_socinfo = {
+ .probe = mtk_socinfo_probe,
+ .remove_new = mtk_socinfo_remove,
+ .driver = {
+ .name = "mtk-socinfo",
+ },
+};
+module_platform_driver(mtk_socinfo);
+
+MODULE_AUTHOR("William-TW LIN <[email protected]>");
+MODULE_DESCRIPTION("MediaTek socinfo driver");
+MODULE_LICENSE("GPL");
--
2.18.0
The socinfo driver reads chip information from eFuses and does not need
any devicetree node. Register it from mtk-efuse.
While at it, also add the name for this driver's nvmem_config.
Signed-off-by: William-tw Lin <[email protected]>
---
drivers/nvmem/mtk-efuse.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
index 84f05b40a411..f5bebcecf9bd 100644
--- a/drivers/nvmem/mtk-efuse.c
+++ b/drivers/nvmem/mtk-efuse.c
@@ -68,6 +68,7 @@ static int mtk_efuse_probe(struct platform_device *pdev)
struct nvmem_config econfig = {};
struct mtk_efuse_priv *priv;
const struct mtk_efuse_pdata *pdata;
+ struct platform_device *socinfo;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -85,11 +86,20 @@ static int mtk_efuse_probe(struct platform_device *pdev)
econfig.size = resource_size(res);
econfig.priv = priv;
econfig.dev = dev;
+ econfig.name = "mtk-efuse";
if (pdata->uses_post_processing)
econfig.fixup_dt_cell_info = &mtk_efuse_fixup_dt_cell_info;
nvmem = devm_nvmem_register(dev, &econfig);
+ if (IS_ERR(nvmem))
+ return PTR_ERR(nvmem);
- return PTR_ERR_OR_ZERO(nvmem);
+ socinfo = platform_device_register_data(&pdev->dev, "mtk-socinfo",
+ PLATFORM_DEVID_AUTO, NULL, 0);
+ if (IS_ERR(socinfo))
+ dev_info(dev, "MediaTek SoC Information will be unavailable\n");
+
+ platform_set_drvdata(pdev, socinfo);
+ return 0;
}
static const struct mtk_efuse_pdata mtk_mt8186_efuse_pdata = {
@@ -108,8 +118,17 @@ static const struct of_device_id mtk_efuse_of_match[] = {
};
MODULE_DEVICE_TABLE(of, mtk_efuse_of_match);
+static void mtk_efuse_remove(struct platform_device *pdev)
+{
+ struct platform_device *socinfo = platform_get_drvdata(pdev);
+
+ if (!IS_ERR_OR_NULL(socinfo))
+ platform_device_unregister(socinfo);
+}
+
static struct platform_driver mtk_efuse_driver = {
.probe = mtk_efuse_probe,
+ .remove_new = mtk_efuse_remove,
.driver = {
.name = "mediatek,efuse",
.of_match_table = mtk_efuse_of_match,
--
2.18.0
Il 22/12/23 09:07, William-tw Lin ha scritto:
> The socinfo driver reads chip information from eFuses and does not need
> any devicetree node. Register it from mtk-efuse.
>
> While at it, also add the name for this driver's nvmem_config.
>
> Signed-off-by: William-tw Lin <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Il 22/12/23 09:07, William-tw Lin ha scritto:
> Add driver for socinfo retrieval. This patch includes the following:
> 1. mtk-socinfo driver for chip info retrieval
> 2. Related changes to Makefile and Kconfig
>
> Signed-off-by: William-tw Lin <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Il 22/12/23 09:07, William-tw Lin ha scritto:
> Add efuse nodes for socinfo retrieval for MT8173, MT8183, MT8186,
> MT8192 and MT8195.
>
> Signed-off-by: William-tw Lin <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
On Fri, 22 Dec 2023 16:07:36 +0800, William-tw Lin wrote:
> v4 changes:
> dts:
> 1. remove phandle from socinfo-data for all platforms
>
> mtk-socinfo.c:
> 1. use module_platform_driver instead of builtin_platform_driver
>
> [...]
Applied, thanks!
[3/3] nvmem: mtk-efuse: Register MediaTek socinfo driver from efuse
commit: 4e6102d60d88975bc65a0dde05a8ba096c450249
Best regards,
--
Srinivas Kandagatla <[email protected]>
Il 22/12/23 09:07, William-tw Lin ha scritto:
> Add efuse nodes for socinfo retrieval for MT8173, MT8183, MT8186,
> MT8192 and MT8195.
>
> Signed-off-by: William-tw Lin <[email protected]>
Applied to v6.4-next/dts64
Thanks!
Angelo
Il 22/12/23 09:07, William-tw Lin ha scritto:
> Add driver for socinfo retrieval. This patch includes the following:
> 1. mtk-socinfo driver for chip info retrieval
> 2. Related changes to Makefile and Kconfig
>
> Signed-off-by: William-tw Lin <[email protected]>
Applied to v6.4-next/soc
Thanks!
Angelo