linux-kernel - [PATCH 02/17] dt-bindings: i2c: exynos5: add specific compatibles for existing SoC

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Date:   Wed,  8 Nov 2023 11:43:28 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Andi Shyti <andi.shyti@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Lee Jones <lee@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Sam Protsenko <semen.protsenko@...aro.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-iio@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-pwm@...r.kernel.org,
        linux-rtc@...r.kernel.org, linux-serial@...r.kernel.org,
        alsa-devel@...a-project.org, linux-sound@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 02/17] dt-bindings: i2c: exynos5: add specific compatibles for existing SoC

Samsung Exynos SoC reuses several devices from older designs, thus
historically we kept the old (block's) compatible only.  This works fine
and there is no bug here, however guidelines expressed in
Documentation/devicetree/bindings/writing-bindings.rst state that:
1. Compatibles should be specific.
2. We should add new compatibles in case of bugs or features.

Add compatibles specific to each SoC in front of all old-SoC-like
compatibles.

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

---

I propose to take the patch through Samsung SoC (me). See cover letter
for explanation.
---
 Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml | 10 +++++++++-
 .../devicetree/bindings/soc/samsung/exynos-usi.yaml    |  2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
index 3e52a0db6c41..c1f5d2cb7709 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
@@ -25,7 +25,15 @@ properties:
           - samsung,exynos5250-hsi2c    # Exynos5250 and Exynos5420
           - samsung,exynos5260-hsi2c    # Exynos5260
           - samsung,exynos7-hsi2c       # Exynos7
-          - samsung,exynosautov9-hsi2c  # ExynosAutoV9 and Exynos850
+          - samsung,exynosautov9-hsi2c
+      - items:
+          - enum:
+              - samsung,exynos5433-hsi2c
+          - const: samsung,exynos7-hsi2c
+      - items:
+          - enum:
+              - samsung,exynos850-hsi2c
+          - const: samsung,exynosautov9-hsi2c
       - const: samsung,exynos5-hsi2c    # Exynos5250 and Exynos5420
         deprecated: true
 
diff --git a/Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml b/Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml
index a6836904a4f8..5b7ab69546c4 100644
--- a/Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml
+++ b/Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml
@@ -155,7 +155,7 @@ examples:
         };
 
         hsi2c_0: i2c@...20000 {
-            compatible = "samsung,exynosautov9-hsi2c";
+            compatible = "samsung,exynos850-hsi2c", "samsung,exynosautov9-hsi2c";
             reg = <0x13820000 0xc0>;
             interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
             #address-cells = <1>;
-- 
2.34.1