From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Tue, 4 May 2021 14:41:24 +0000 (+0200)
Subject: ARM: dts: rcar-gen1: Correct internal delay for i2c[123]
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d4ea5c61e15adb3995a9944b96e842ce7faaa450;p=linux.git

ARM: dts: rcar-gen1: Correct internal delay for i2c[123]

According to the R-Car M1A and H1 Hardware User's Manuals Rev. 1.00, the
LSI internal delay for I2C instances 1 to 3 is 5 ns (typ.), which
differs from the default 50 ns as specified for instance 0.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1eac63f15a776e492ff8a2d8447c5e1019982dd1.1620138979.git.geert+renesas@glider.be
Link: https://lore.kernel.org/r/73c96fd455df82ef04fd1db6d7dd79b4679f6c56.1620138979.git.geert+renesas@glider.be
---

diff --git a/arch/arm/boot/dts/r8a7778.dtsi b/arch/arm/boot/dts/r8a7778.dtsi
index c9f8735860bf8..95efbafb0b707 100644
--- a/arch/arm/boot/dts/r8a7778.dtsi
+++ b/arch/arm/boot/dts/r8a7778.dtsi
@@ -166,6 +166,7 @@
 		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C1>;
 		power-domains = <&cpg_clocks>;
+		i2c-scl-internal-delay-ns = <5>;
 		status = "disabled";
 	};
 
@@ -177,6 +178,7 @@
 		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C2>;
 		power-domains = <&cpg_clocks>;
+		i2c-scl-internal-delay-ns = <5>;
 		status = "disabled";
 	};
 
@@ -188,6 +190,7 @@
 		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C3>;
 		power-domains = <&cpg_clocks>;
+		i2c-scl-internal-delay-ns = <5>;
 		status = "disabled";
 	};
 
diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index 3c5fcdfe16b87..39fc58f32df61 100644
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi
@@ -198,6 +198,7 @@
 		interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7779_CLK_I2C1>;
 		power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
+		i2c-scl-internal-delay-ns = <5>;
 		status = "disabled";
 	};
 
@@ -209,6 +210,7 @@
 		interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7779_CLK_I2C2>;
 		power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
+		i2c-scl-internal-delay-ns = <5>;
 		status = "disabled";
 	};
 
@@ -220,6 +222,7 @@
 		interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7779_CLK_I2C3>;
 		power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
+		i2c-scl-internal-delay-ns = <5>;
 		status = "disabled";
 	};