From: Christian Lamparter <[email protected]>
This patch adds support for the "amcc,usb-otg" device
which is found in the PowerPC Canyonlands' dts.
The device definition was added by:
commit c89b3458d8cc ("powerpc/44x: Add USB DWC DTS entry to Canyonlands
board")
but without any driver support as the dwc2 driver wasn't available at
that time.
Note: The system can't use the generic "snps,dwc2" compatible
because of the special ahbcfg configuration. The default
GAHBCFG_HBSTLEN_INCR4 of snps,dwc2 can cause a system hang
when the USB and SATA is used concurrently.
Signed-off-by: Christian Lamparter <[email protected]>
Signed-off-by: John Youn <[email protected]>
---
Sorry, the previous one broke compilation. This fixes it.
Regards,
John
v3 [johnyoun]:
* Fixed compilation issue
v2 [johnyoun]:
* Removed params struct
* Minor commit message formatting
Documentation/devicetree/bindings/usb/dwc2.txt | 1 +
drivers/usb/dwc2/params.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
index ad8f7ff..6c7c2bce 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.txt
+++ b/Documentation/devicetree/bindings/usb/dwc2.txt
@@ -12,6 +12,7 @@ Required properties:
- "lantiq,xrx200-usb": The DWC2 USB controller instance in Lantiq XRX SoCs;
- "amlogic,meson8b-usb": The DWC2 USB controller instance in Amlogic Meson8b SoCs;
- "amlogic,meson-gxbb-usb": The DWC2 USB controller instance in Amlogic S905 SoCs;
+ - "amcc,dwc-otg": The DWC2 USB controller instance in AMCC Canyonlands 460EX SoCs;
- snps,dwc2: A generic DWC2 USB controller with default parameters.
- reg : Should contain 1 register range (address and length)
- interrupts : Should contain 1 interrupt
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 513556a..a786256 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -239,6 +239,7 @@ const struct of_device_id dwc2_of_match_table[] = {
{ .compatible = "samsung,s3c6400-hsotg", .data = NULL},
{ .compatible = "amlogic,meson8b-usb", .data = ¶ms_amlogic },
{ .compatible = "amlogic,meson-gxbb-usb", .data = ¶ms_amlogic },
+ { .compatible = "amcc,dwc-otg", .data = NULL },
{},
};
MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
--
2.10.0
On Tue, Nov 15, 2016 at 03:03:40PM -0800, John Youn wrote:
> From: Christian Lamparter <[email protected]>
>
> This patch adds support for the "amcc,usb-otg" device
> which is found in the PowerPC Canyonlands' dts.
>
> The device definition was added by:
>
> commit c89b3458d8cc ("powerpc/44x: Add USB DWC DTS entry to Canyonlands
> board")
>
> but without any driver support as the dwc2 driver wasn't available at
> that time.
>
> Note: The system can't use the generic "snps,dwc2" compatible
> because of the special ahbcfg configuration. The default
> GAHBCFG_HBSTLEN_INCR4 of snps,dwc2 can cause a system hang
> when the USB and SATA is used concurrently.
>
> Signed-off-by: Christian Lamparter <[email protected]>
> Signed-off-by: John Youn <[email protected]>
> ---
>
> Sorry, the previous one broke compilation. This fixes it.
>
> Regards,
> John
>
> v3 [johnyoun]:
> * Fixed compilation issue
>
> v2 [johnyoun]:
> * Removed params struct
> * Minor commit message formatting
>
> Documentation/devicetree/bindings/usb/dwc2.txt | 1 +
> drivers/usb/dwc2/params.c | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
> index ad8f7ff..6c7c2bce 100644
> --- a/Documentation/devicetree/bindings/usb/dwc2.txt
> +++ b/Documentation/devicetree/bindings/usb/dwc2.txt
> @@ -12,6 +12,7 @@ Required properties:
> - "lantiq,xrx200-usb": The DWC2 USB controller instance in Lantiq XRX SoCs;
> - "amlogic,meson8b-usb": The DWC2 USB controller instance in Amlogic Meson8b SoCs;
> - "amlogic,meson-gxbb-usb": The DWC2 USB controller instance in Amlogic S905 SoCs;
> + - "amcc,dwc-otg": The DWC2 USB controller instance in AMCC Canyonlands 460EX SoCs;
> - snps,dwc2: A generic DWC2 USB controller with default parameters.
> - reg : Should contain 1 register range (address and length)
> - interrupts : Should contain 1 interrupt
> diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
> index 513556a..a786256 100644
> --- a/drivers/usb/dwc2/params.c
> +++ b/drivers/usb/dwc2/params.c
> @@ -239,6 +239,7 @@ const struct of_device_id dwc2_of_match_table[] = {
> { .compatible = "samsung,s3c6400-hsotg", .data = NULL},
> { .compatible = "amlogic,meson8b-usb", .data = ¶ms_amlogic },
> { .compatible = "amlogic,meson-gxbb-usb", .data = ¶ms_amlogic },
> + { .compatible = "amcc,dwc-otg", .data = NULL },
'.data = NULL' is unnecessary.
With that fixed,
Acked-by: Rob Herring <[email protected]>
> {},
> };
> MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
> --
> 2.10.0
>