d1: Add device tree configuration for D1 RGB LED Controller

This adds the device tree patches written by Samuel Holland
to the kernel. The driver was merged into mainline Linux in 6.8,
but the device tree patches were never merged into mainline.

Signed-off-by: Gabriel Roper <lockheedmaniac@gmail.com>

diff --git a/target/linux/d1/patches-6.12/0015-riscv-dts-allwinner-d1-add-led-controller-node.patch b/target/linux/d1/patches-6.12/0015-riscv-dts-allwinner-d1-add-led-controller-node.patch
new file mode 100644 (file)
index 0000000..271f1c5
--- /dev/null
+++ b/target/linux/d1/patches-6.12/0015-riscv-dts-allwinner-d1-add-led-controller-node.patch
@@ -0,0 +1,60 @@
+From: Samuel Holland <samuel@sholland.org>
+Subject: riscv: dts: allwinner: d1: Add LED controller node
+Date: Sun, 29 Oct 2023 16:26:58 -0500
+
+Allwinner D1 contains an LED controller. Add its devicetree node, as
+well as the pinmux used by the reference board design.
+
+Acked-by: Guo Ren <guoren@kernel.org>
+Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
+Tested-by: Trevor Woerner <twoerner@gmail.com>
+Signed-off-by: Samuel Holland <samuel@sholland.org>
+---
+(no changes since v5)
+
+Changes in v5:
+ - New patch for v5
+
+ arch/riscv/boot/dts/allwinner/sun20i-d1.dtsi      |  6 ++++++
+ arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi | 15 +++++++++++++++
+ 2 files changed, 21 insertions(+)
+
+--- a/arch/riscv/boot/dts/allwinner/sun20i-d1.dtsi
++++ b/arch/riscv/boot/dts/allwinner/sun20i-d1.dtsi
+@@ -59,6 +59,12 @@
+       };
+ 
+       /omit-if-no-ref/
++      ledc_pc0_pin: ledc-pc0-pin {
++              pins = "PC0";
++              function = "ledc";
++      };
++
++      /omit-if-no-ref/
+       uart0_pb8_pins: uart0-pb8-pins {
+               pins = "PB8", "PB9";
+               function = "uart0";
+--- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
++++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
+@@ -156,6 +156,21 @@
+                       #reset-cells = <1>;
+               };
+ 
++              ledc: led-controller@2008000 {
++                      compatible = "allwinner,sun20i-d1-ledc",
++                                   "allwinner,sun50i-a100-ledc";
++                      reg = <0x2008000 0x400>;
++                      interrupts = <SOC_PERIPHERAL_IRQ(20) IRQ_TYPE_LEVEL_HIGH>;
++                      clocks = <&ccu CLK_BUS_LEDC>, <&ccu CLK_LEDC>;
++                      clock-names = "bus", "mod";
++                      resets = <&ccu RST_BUS_LEDC>;
++                      dmas = <&dma 42>;
++                      dma-names = "tx";
++                      status = "disabled";
++                      #address-cells = <1>;
++                      #size-cells = <0>;
++              };
++
+               gpadc: adc@2009000 {
+                       compatible = "allwinner,sun20i-d1-gpadc";
+                       reg = <0x2009000 0x400>;

diff --git a/target/linux/d1/patches-6.12/0016-riscv-dts-allwinner-d1-add-rgb-leds-to-boards.patch b/target/linux/d1/patches-6.12/0016-riscv-dts-allwinner-d1-add-rgb-leds-to-boards.patch
new file mode 100644 (file)
index 0000000..c0adfd7
--- /dev/null
+++ b/target/linux/d1/patches-6.12/0016-riscv-dts-allwinner-d1-add-rgb-leds-to-boards.patch
@@ -0,0 +1,70 @@
+From: Samuel Holland <samuel@sholland.org>
+Subject: riscv: dts: allwinner: d1: Add RGB LEDs to boards
+Date: Sun, 29 Oct 2023 16:26:59 -0500
+
+Some D1-based boards feature an onboard RGB LED. Enable them.
+
+Acked-by: Guo Ren <guoren@kernel.org>
+Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
+Tested-by: Trevor Woerner <twoerner@gmail.com>
+Signed-off-by: Samuel Holland <samuel@sholland.org>
+---
+(no changes since v5)
+
+Changes in v5:
+ - New patch for v5
+
+ .../boot/dts/allwinner/sun20i-d1-lichee-rv-dock.dts | 12 ++++++++++++
+ arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts   | 13 +++++++++++++
+ 2 files changed, 25 insertions(+)
+
+--- a/arch/riscv/boot/dts/allwinner/sun20i-d1-lichee-rv-dock.dts
++++ b/arch/riscv/boot/dts/allwinner/sun20i-d1-lichee-rv-dock.dts
+@@ -59,6 +59,18 @@
+       status = "okay";
+ };
+ 
++&ledc {
++      pinctrl-0 = <&ledc_pc0_pin>;
++      pinctrl-names = "default";
++      status = "okay";
++
++      multi-led@0 {
++              reg = <0x0>;
++              color = <LED_COLOR_ID_RGB>;
++              function = LED_FUNCTION_STATUS;
++      };
++};
++
+ &mmc1 {
+       bus-width = <4>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+--- a/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
++++ b/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
+@@ -22,6 +22,7 @@
+ 
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/input/input.h>
++#include <dt-bindings/leds/common.h>
+ 
+ /dts-v1/;
+ 
+@@ -121,6 +122,18 @@
+       };
+ };
+ 
++&ledc {
++      pinctrl-0 = <&ledc_pc0_pin>;
++      pinctrl-names = "default";
++      status = "okay";
++
++      multi-led@0 {
++              reg = <0x0>;
++              color = <LED_COLOR_ID_RGB>;
++              function = LED_FUNCTION_STATUS;
++      };
++};
++
+ &mdio {
+       ext_rgmii_phy: ethernet-phy@1 {
+               compatible = "ethernet-phy-ieee802.3-c22";