99 lines
3.1 KiB
Diff
99 lines
3.1 KiB
Diff
From d2ab1f26e1b33970a6ccda18633a681a7730665e Mon Sep 17 00:00:00 2001
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From: Stephen <stephen@vamrs.com>
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Date: Mon, 21 Oct 2019 12:54:51 +0800
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Subject: [PATCH 76/97] overlays-rockpi4: add w1-gpio4-30
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Support devices such as DS18B20.
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Signed-off-by: Stephen <stephen@vamrs.com>
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---
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.../dts/rockchip/overlays-rockpi4/Makefile | 3 +-
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.../boot/dts/rockchip/overlays-rockpi4/README | 6 ++++
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.../rockchip/overlays-rockpi4/hw_intfc.conf | 5 ++-
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.../overlays-rockpi4/w1-gpio4-30-overlay.dts | 31 +++++++++++++++++++
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4 files changed, 43 insertions(+), 2 deletions(-)
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create mode 100644 arch/arm64/boot/dts/rockchip/overlays-rockpi4/w1-gpio4-30-overlay.dts
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diff --git a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/Makefile b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/Makefile
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index 85d76b2e59db..7f063a5258b1 100644
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--- a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/Makefile
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+++ b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/Makefile
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@@ -16,7 +16,8 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
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raspberrypi-7-inch-lcd.dtbo \
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cpufreq.dtbo \
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imx219.dtbo \
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- ov5647.dtbo
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+ ov5647.dtbo \
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+ w1-gpio4-30.dtbo
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targets += dtbs dtbs_install
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targets += $(dtbo-y)
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diff --git a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/README b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/README
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index 5cef50b9e0dd..24b01d82a341 100644
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--- a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/README
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+++ b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/README
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@@ -174,3 +174,9 @@ Name: spi1-flash
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Info: Overlay for activation of spi flash.
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Need set: intfc:uart4=off intfc:spi1=on
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Load: intfc:dtoverlay=spi1-flash
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+
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+
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+Name: w1-gpio4-30
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+Info: Overlay for activation of 1-wire on GPIO4_D6 for devices such as
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+ DS18B20.
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+Load: intfc:dtoverlay=w1-gpio4-30
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diff --git a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/hw_intfc.conf b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/hw_intfc.conf
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index 024fe765fef4..15661550675d 100644
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--- a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/hw_intfc.conf
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+++ b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/hw_intfc.conf
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@@ -63,4 +63,7 @@ intfc:dtoverlay=console-on-ttyS2
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#intfc:dtoverlay=imx219
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# Add ov5647 camera module support. Need disabled imx219 camera module.
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-#intfc:dtoverlay=ov5647
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\ No newline at end of file
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+#intfc:dtoverlay=ov5647
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+
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+# Add w1 on GPIO4_D6 to support devices such as DS18B20.
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+#intfc:dtoverlay=w1-gpio4-30
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diff --git a/arch/arm64/boot/dts/rockchip/overlays-rockpi4/w1-gpio4-30-overlay.dts b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/w1-gpio4-30-overlay.dts
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new file mode 100644
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index 000000000000..ad21c50dd5fc
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--- /dev/null
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+++ b/arch/arm64/boot/dts/rockchip/overlays-rockpi4/w1-gpio4-30-overlay.dts
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@@ -0,0 +1,31 @@
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "rockchip,rockpi","rockchip,rk3399";
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+
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+ fragment@0 {
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+ target-path = "/";
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+
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+ __overlay__ {
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+
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+ w1: onewire@0 {
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+ compatible = "w1-gpio";
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&w1_pins>;
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+ gpios = <&gpio4 30 0>;
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&gpio4>;
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+
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+ __overlay__ {
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+ w1_pins: w1_pins {
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+ rockchip,pins = <4 30 0 &pcfg_pull_none>;
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+ };
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+ };
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+ };
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+};
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--
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2.25.1
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