b167421e55
Add the latest linux available from https://github.com/armbian/build commit de58ac1faac92724c6449db12c22affaeb003875, tag: sunxi-5.3, alongside all the patches that it comes with. Signed-off-by: Vicentiu Galanopulo <vicentiu@balena.io>
42 lines
1.4 KiB
Diff
42 lines
1.4 KiB
Diff
From 0ba507d286fc521e71ba048d81c7d1d751012bb8 Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megous@megous.com>
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Date: Sat, 30 Sep 2017 02:51:09 +0200
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Subject: [PATCH 33/82] ARM: dts: sun8i-a83t-tbs-a711: Use i2c-gpio to
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communicate with cameras
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Camera sensors are connected via I2C to PE14/PE15 pins on A83T.
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Unfortunately while the A83T datasheet suggests TWI2 I2C controller
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can be configured to have SDA/SCL on these pins, this configuration
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doesn't work in reality. We need to either use CCI I2C controller
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that is part of the CSI module, or as is done in this patch, use GPIO
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based bitbanging I2C driver.
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Signed-off-by: Ondrej Jirman <megous@megous.com>
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---
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arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 10 ++++++++++
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1 file changed, 10 insertions(+)
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diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
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index 7936405862c1..8a0a8d39eb21 100644
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--- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
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+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
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@@ -72,6 +72,16 @@
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default-brightness-level = <39>;
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};
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+ i2c_gpio: i2c-gpio {
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+ compatible = "i2c-gpio";
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+ /* PE15 = sda, PE14 = scl */
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+ sda-gpios = <&pio 4 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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+ scl-gpios = <&pio 4 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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+ i2c-gpio,delay-us = <1>; /* ~100 kHz */
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ };
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+
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panel {
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compatible = "tbs,a711-panel", "panel-lvds";
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backlight = <&backlight>;
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--
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2.20.1
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