lkml.org 
[lkml]   [2023]   [Jan]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] dt-bindings: usb: samsung,exynos-dwc3: allow unit address in DTS
Date
The Samsung Exynos SoC USB 3.0 DWC3 Controller is a simple wrapper of
actual DWC3 Controller device node. It handles necessary Samsung
Exynos-specific resources (regulators, clocks), but does not have its
own MMIO address space.

However neither simple-bus bindings nor dtc W=1 accept device nodes in
soc@ node which do not have unit address. Therefore allow using
the address space of child device (actual DWC3 Controller) as the
wrapper's address.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

DTS fixes are here:
https://lore.kernel.org/linux-samsung-soc/20230125175751.675090-1-krzysztof.kozlowski@linaro.org/T/#t
---
.../devicetree/bindings/usb/samsung,exynos-dwc3.yaml | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml b/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
index 6b9a3bcb3926..a94b1926dda0 100644
--- a/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
@@ -29,6 +29,9 @@ properties:

ranges: true

+ reg:
+ maxItems: 1
+
'#size-cells':
const: 1

@@ -108,8 +111,9 @@ examples:
#include <dt-bindings/clock/exynos5420.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>

- usb {
+ usb-wrapper@12000000 {
compatible = "samsung,exynos5250-dwusb3";
+ reg = <0x12000000 0x10000>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
--
2.34.1
\
 
 \ /
  Last update: 2023-03-26 23:55    [W:0.103 / U:0.156 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site