bcm53xx: add DT patch describing pins mux controller

It's needed to support new devices that use specific pin functions. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
6 years ago · 0cf32de17c
parent 7dd42aa592
commit 0cf32de17c
1 changed files with 73 additions and 0 deletions
--- a/target/linux/bcm53xx/patches-4.14/131-ARM-dts-BCM5301X-Describe-Northstar-pins-mux-control.patch
+++ b/target/linux/bcm53xx/patches-4.14/131-ARM-dts-BCM5301X-Describe-Northstar-pins-mux-control.patch
@ -0,0 +1,73 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Fri, 9 Nov 2018 09:53:56 +0100
+Subject: [PATCH] ARM: dts: BCM5301X: Describe Northstar pins mux controller
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This describes hardware & will allow referencing pin functions. The
+first usage is UART1 which allows supporting devices using it.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+
+--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
+@@ -37,6 +37,8 @@
+ 			reg = <0x0400 0x100>;
+ 			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
+ 			clocks = <&iprocslow>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinmux_uart1>;
+ 			status = "disabled";
+ 		};
+ 	};
+@@ -391,6 +393,48 @@
+ 		status = "disabled";
+ 	};
+ 
+	dmu@1800c000 {
+		compatible = "simple-bus";
+		ranges = <0 0x1800c000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		cru@100 {
+			compatible = "simple-bus";
+			reg = <0x100 0x1a4>;
+			ranges;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			pin-controller@1c0 {
+				compatible = "brcm,bcm4708-pinmux";
+				reg = <0x1c0 0x24>;
+				reg-names = "cru_gpio_control";
+
+				spi-pins {
+					groups = "spi_grp";
+					function = "spi";
+				};
+
+				i2c {
+					groups = "i2c_grp";
+					function = "i2c";
+				};
+
+				pwm {
+					groups = "pwm0_grp", "pwm1_grp",
+						 "pwm2_grp", "pwm3_grp";
+					function = "pwm";
+				};
+
+				pinmux_uart1: uart1 {
+					groups = "uart1_grp";
+					function = "uart1";
+				};
+			};
+		};
+	};
+
+ 	lcpll0: lcpll0@1800c100 {
+ 		#clock-cells = <1>;
+ 		compatible = "brcm,nsp-lcpll0";