94 lines
3.2 KiB
Diff
94 lines
3.2 KiB
Diff
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From a9b327e26842789cd17d259b5424d2c0486096b9 Mon Sep 17 00:00:00 2001
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From: Sergey Larin <cerg2010cerg2010@mail.ru>
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Date: Sun, 14 Jul 2019 19:06:48 +0300
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Subject: [PATCH] ARM: dts: tegra20-glide: Lower GPIO I2C frequency
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Defaults used by downstream kernel are very high. This should resolve
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communication issues and improve stability. Values are set according to
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the comments near I2C structs in original kernel.
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Signed-off-by: Sergey Larin <cerg2010cerg2010@mail.ru>
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---
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arch/arm/boot/dts/tegra20-glide.dts | 16 ++++++++--------
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1 file changed, 8 insertions(+), 8 deletions(-)
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diff --git a/arch/arm/boot/dts/tegra20-glide.dts b/arch/arm/boot/dts/tegra20-glide.dts
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index c3698603ee69..013f46d159a1 100644
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--- a/arch/arm/boot/dts/tegra20-glide.dts
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+++ b/arch/arm/boot/dts/tegra20-glide.dts
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@@ -849,7 +849,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(O, 0) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(O, 7) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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@@ -901,7 +901,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(G, 3) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(I, 0) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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@@ -947,7 +947,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(BB, 4) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(BB, 1) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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@@ -999,7 +999,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(Y, 3) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(Y, 1) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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interrupt-parent = <&gpio>;
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@@ -1019,7 +1019,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(L, 7) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(L, 6) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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@@ -1071,7 +1071,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(Z, 3) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(C, 6) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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@@ -1102,7 +1102,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(T, 6) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(T, 5) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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@@ -1120,7 +1120,7 @@
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compatible = "i2c-gpio";
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sda-gpios = <&gpio TEGRA_GPIO(X, 2) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio TEGRA_GPIO(X, 0) (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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- i2c-gpio,delay-us = <1>;
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+ i2c-gpio,delay-us = <5>;
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#address-cells = <1>;
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#size-cells = <0>;
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--
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2.22.0
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