linux-kernel - [PATCH 2/6] dt-bindings: i2c: exynos5: Add exynosautov9-hsi2c compatible

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Date:   Wed,  1 Dec 2021 21:04:51 +0200
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Jaewon Kim <jaewon02.kim@...sung.com>,
        Chanho Park <chanho61.park@...sung.com>,
        David Virag <virag.david003@...il.com>,
        Youngmin Nam <youngmin.nam@...sung.com>,
        Wolfram Sang <wsa@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org
Subject: [PATCH 2/6] dt-bindings: i2c: exynos5: Add exynosautov9-hsi2c compatible

From: Jaewon Kim <jaewon02.kim@...sung.com>

This patch adds new "samsung,exynosautov9-hsi2c" compatible.
It is for i2c compatible with HSI2C available on Exynos SoC with USI.

Signed-off-by: Jaewon Kim <jaewon02.kim@...sung.com>
Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
---
 Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
index 53df1571eff1..db20e703dea0 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
@@ -13,6 +13,11 @@ description: |
   The Samsung's High Speed I2C controller is used to interface with I2C devices
   at various speeds ranging from 100kHz to 3.4MHz.
 
+  In case the HSI2C controller is encapsulated within USI block (it's the case
+  e.g. for Exynos850 and Exynos Auto V9 SoCs), it might be also necessary to
+  define USI node in device tree file, choosing "i2c" configuration. Please see
+  Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml for details.
+
 allOf:
   - $ref: /schemas/i2c/i2c-controller.yaml#
 
@@ -23,6 +28,7 @@ properties:
           - "samsung,exynos5250-hsi2c"    # Exynos5250 and Exynos5420
           - "samsung,exynos5260-hsi2c"    # Exynos5260
           - "samsung,exynos7-hsi2c"       # Exynos7
+          - "samsung,exynosautov9-hsi2c"  # ExynosAutoV9
       - const: "samsung,exynos5-hsi2c"    # Exynos5250 and Exynos5420
         deprecated: true
 
-- 
2.30.2