arm64: dts: exynos7: add specific compatibles to several blocks

Exynos7 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 Exynos7 in front of all old-SoC-like
compatibles.  This will also help reviews of new code using existing
DTS as template.  No functional impact on Linux drivers behavior.

Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20231108104343.24192-15-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index 6ed80ddf336956980feea9788a710f23a3cee886..9cb6bd61262e15f19d43deca49d07d760802a65d 100644 (file)
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -128,7 +128,8 @@
                ranges = <0 0 0 0x18000000>;
 
                chipid@10000000 {
-                       compatible = "samsung,exynos4210-chipid";
+                       compatible = "samsung,exynos7-chipid",
+                                    "samsung,exynos4210-chipid";
                        reg = <0x10000000 0x100>;
                };
 
@@ -279,7 +280,7 @@
                };
 
                serial_0: serial@13630000 {
-                       compatible = "samsung,exynos4210-uart";
+                       compatible = "samsung,exynos7-uart", "samsung,exynos4210-uart";
                        reg = <0x13630000 0x100>;
                        interrupts = <GIC_SPI 440 IRQ_TYPE_LEVEL_HIGH>;
                        clocks = <&clock_peric0 PCLK_UART0>,
@@ -289,7 +290,7 @@
                };
 
                serial_1: serial@14c20000 {
-                       compatible = "samsung,exynos4210-uart";
+                       compatible = "samsung,exynos7-uart", "samsung,exynos4210-uart";
                        reg = <0x14c20000 0x100>;
                        interrupts = <GIC_SPI 456 IRQ_TYPE_LEVEL_HIGH>;
                        clocks = <&clock_peric1 PCLK_UART1>,
@@ -299,7 +300,7 @@
                };
 
                serial_2: serial@14c30000 {
-                       compatible = "samsung,exynos4210-uart";
+                       compatible = "samsung,exynos7-uart", "samsung,exynos4210-uart";
                        reg = <0x14c30000 0x100>;
                        interrupts = <GIC_SPI 457 IRQ_TYPE_LEVEL_HIGH>;
                        clocks = <&clock_peric1 PCLK_UART2>,
@@ -309,7 +310,7 @@
                };
 
                serial_3: serial@14c40000 {
-                       compatible = "samsung,exynos4210-uart";
+                       compatible = "samsung,exynos7-uart", "samsung,exynos4210-uart";
                        reg = <0x14c40000 0x100>;
                        interrupts = <GIC_SPI 458 IRQ_TYPE_LEVEL_HIGH>;
                        clocks = <&clock_peric1 PCLK_UART3>,
@@ -539,7 +540,7 @@
                };
 
                rtc: rtc@10590000 {
-                       compatible = "samsung,s3c6410-rtc";
+                       compatible = "samsung,exynos7-rtc", "samsung,s3c6410-rtc";
                        reg = <0x10590000 0x100>;
                        interrupts = <GIC_SPI 355 IRQ_TYPE_LEVEL_HIGH>,
                                     <GIC_SPI 356 IRQ_TYPE_LEVEL_HIGH>;
@@ -559,7 +560,8 @@
                };
 
                gpu: gpu@14ac0000 {
-                       compatible = "samsung,exynos5433-mali", "arm,mali-t760";
+                       compatible = "samsung,exynos7-mali",
+                                    "samsung,exynos5433-mali", "arm,mali-t760";
                        reg = <0x14ac0000 0x5000>;
                        interrupts = <GIC_SPI 241 IRQ_TYPE_LEVEL_HIGH>,
                                     <GIC_SPI 242 IRQ_TYPE_LEVEL_HIGH>,
@@ -619,7 +621,7 @@
                };
 
                pwm: pwm@136c0000 {
-                       compatible = "samsung,exynos4210-pwm";
+                       compatible = "samsung,exynos7-pwm", "samsung,exynos4210-pwm";
                        reg = <0x136c0000 0x100>;
                        interrupts = <GIC_SPI 449 IRQ_TYPE_LEVEL_HIGH>,
                                     <GIC_SPI 450 IRQ_TYPE_LEVEL_HIGH>,