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202 lines
5.3 KiB
Diff
202 lines
5.3 KiB
Diff
From 393b01ee7330723b5f27b86d1b03bed88f8a8ffa Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Thu, 9 Apr 2020 17:26:13 +0100
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Subject: [PATCH] dt: Update all mainline bcm283x dt files for i2c0
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pinctrl mux
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BSC0 (aka i2c0) can me muxed via pinctrl to GPIOs 0&1, 28&29, or
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44&45. These have different uses based on the platform (40pin header,
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and CSI/DSI connectors), so add a pinctrl I2C mux between the
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different options.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 5 +++++
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arch/arm/boot/dts/bcm2835-rpi-a.dts | 7 +++++++
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arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 5 +++++
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arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts | 7 +++++++
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arch/arm/boot/dts/bcm2835-rpi-b.dts | 7 +++++++
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arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts | 5 +++++
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arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 5 +++++
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arch/arm/boot/dts/bcm2835-rpi-zero.dts | 5 +++++
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arch/arm/boot/dts/bcm2835-rpi.dtsi | 10 +++++++---
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arch/arm/boot/dts/bcm2836-rpi-2-b.dts | 5 +++++
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arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts | 5 +++++
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arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 5 +++++
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arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 5 +++++
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arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts | 5 +++++
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14 files changed, 78 insertions(+), 3 deletions(-)
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--- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
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@@ -126,3 +126,8 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 28&29 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-a.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts
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@@ -121,3 +121,10 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* i2c0 on camera/display connector is gpio 0&1. Not exposed on header.
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+ * To avoid having to remap everything, map both ports to gpios 0&1
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+ */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio0>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
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@@ -128,3 +128,8 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 28&29 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
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@@ -121,3 +121,10 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* i2c0 on camera/display connector is gpio 0&1. Not exposed on header.
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+ * To avoid having to remap everything, map both ports to gpios 0&1
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+ */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio0>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
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@@ -116,3 +116,10 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* camera/display connector use BSC1 on GPIOS 2&3.
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+ * To avoid having to remap everything, map both ports to gpios 0&1
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+ */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio0>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
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@@ -95,3 +95,8 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* WHAT TO DO HERE? */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
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@@ -149,3 +149,8 @@
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pinctrl-0 = <&uart1_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 28&29 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts
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+++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
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@@ -117,3 +117,8 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 28&29 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
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+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
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@@ -46,13 +46,17 @@
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};
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};
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-&i2c0 {
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- pinctrl-names = "default";
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- pinctrl-0 = <&i2c0_gpio0>;
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+&i2c0if {
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status = "okay";
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clock-frequency = <100000>;
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};
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+&i2c0mux {
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+ pinctrl-0 = <&i2c0_gpio0>;
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+ /* pinctrl-1 varies based on platform */
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+ status = "okay";
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+};
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+
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&i2c1 {
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pinctrl-names = "default";
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pinctrl-0 = <&i2c1_gpio2>;
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--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
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+++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
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@@ -128,3 +128,8 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 28&29 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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--- a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
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+++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
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@@ -176,3 +176,8 @@
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pinctrl-0 = <&uart1_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 44&45 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio44>;
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+};
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--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
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+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
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@@ -179,3 +179,8 @@
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pinctrl-0 = <&uart1_gpio14>;
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status = "okay";
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};
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+
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+/* i2c on camera/display connector is gpio 44&45 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio44>;
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+};
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--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
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+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
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@@ -174,3 +174,8 @@
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status = "okay";
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bus-width = <4>;
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};
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+
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+/* i2c on camera/display connector is gpio 44&45 */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio44>;
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+};
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--- a/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
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+++ b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
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@@ -94,3 +94,8 @@
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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+
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+/* WHAT TO DO HERE? */
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+&i2c0mux {
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+ pinctrl-1 = <&i2c0_gpio28>;
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+};
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