X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0652-overlays-Add-baudrate-parameter-to-i2c3-i2c6.patch;fp=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0652-overlays-Add-baudrate-parameter-to-i2c3-i2c6.patch;h=5ec631f7fd046e3b1404ca053f81d7ecc6a422e6;hb=84d555aa74434392b682fd9eb0fa701c89a046d6;hp=0000000000000000000000000000000000000000;hpb=953973c2991e8640549a55df7a0574a1abac8644;p=openwrt%2Fstaging%2Fchunkeey.git

diff --git a/target/linux/brcm2708/patches-4.19/950-0652-overlays-Add-baudrate-parameter-to-i2c3-i2c6.patch b/target/linux/brcm2708/patches-4.19/950-0652-overlays-Add-baudrate-parameter-to-i2c3-i2c6.patch
new file mode 100644
index 0000000000..5ec631f7fd
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0652-overlays-Add-baudrate-parameter-to-i2c3-i2c6.patch
@@ -0,0 +1,194 @@
+From 114845b6010b6e6a320804f2d86ab4d5dc5a06de Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 5 Aug 2019 14:17:14 +0100
+Subject: [PATCH] overlays: Add baudrate parameter to i2c3-i2c6
+
+The overlays for enabling the new BCM2711 I2C interfaces were lacking
+the means to configure the baud/clock rate.
+
+Also explictly set the default pins, rather than relying on the values
+in the base DTB.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README           |  8 ++++++++
+ arch/arm/boot/dts/overlays/i2c3-overlay.dts | 15 ++++++++++++---
+ arch/arm/boot/dts/overlays/i2c4-overlay.dts | 15 ++++++++++++---
+ arch/arm/boot/dts/overlays/i2c5-overlay.dts | 15 ++++++++++++---
+ arch/arm/boot/dts/overlays/i2c6-overlay.dts | 15 ++++++++++++---
+ 5 files changed, 56 insertions(+), 12 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1221,6 +1221,8 @@ Info:   Enable the i2c3 bus
+ Load:   dtoverlay=i2c3,<param>
+ Params: pins_2_3                Use GPIOs 2 and 3
+         pins_4_5                Use GPIOs 4 and 5 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
+ 
+ 
+ Name:   i2c4
+@@ -1228,6 +1230,8 @@ Info:   Enable the i2c4 bus
+ Load:   dtoverlay=i2c4,<param>
+ Params: pins_6_7                Use GPIOs 6 and 7
+         pins_8_9                Use GPIOs 8 and 9 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
+ 
+ 
+ Name:   i2c5
+@@ -1235,6 +1239,8 @@ Info:   Enable the i2c5 bus
+ Load:   dtoverlay=i2c5,<param>
+ Params: pins_10_11              Use GPIOs 10 and 11
+         pins_12_13              Use GPIOs 12 and 13 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
+ 
+ 
+ Name:   i2c6
+@@ -1242,6 +1248,8 @@ Info:   Enable the i2c6 bus
+ Load:   dtoverlay=i2c6,<param>
+ Params: pins_0_1                Use GPIOs 0 and 1
+         pins_22_23              Use GPIOs 22 and 23 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
+ 
+ 
+ Name:   i2s-gpio28-31
+--- a/arch/arm/boot/dts/overlays/i2c3-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c3-overlay.dts
+@@ -6,10 +6,11 @@
+ 
+ 	fragment@0 {
+ 		target = <&i2c3>;
+-		__overlay__ {
++		frag0: __overlay__ {
+ 			status = "okay";
+ 			pinctrl-names = "default";
+ 			pinctrl-0 = <&i2c3_pins>;
++			clock-frequency = <100000>;
+ 		};
+ 	};
+ 
+@@ -20,8 +21,16 @@
+ 		};
+ 	};
+ 
++	fragment@2 {
++		target = <&i2c3_pins>;
++		__overlay__ {
++			brcm,pins = <4 5>;
++		};
++	};
++
+ 	__overrides__ {
+-		pins_2_3 = <0>,"=1";
+-		pins_4_5 = <0>,"!1";
++		pins_2_3 = <0>,"=1!2";
++		pins_4_5 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/i2c4-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c4-overlay.dts
+@@ -6,10 +6,11 @@
+ 
+ 	fragment@0 {
+ 		target = <&i2c4>;
+-		__overlay__ {
++		frag0: __overlay__ {
+ 			status = "okay";
+ 			pinctrl-names = "default";
+ 			pinctrl-0 = <&i2c4_pins>;
++			clock-frequency = <100000>;
+ 		};
+ 	};
+ 
+@@ -20,8 +21,16 @@
+ 		};
+ 	};
+ 
++	fragment@2 {
++		target = <&i2c4_pins>;
++		__overlay__ {
++			brcm,pins = <8 9>;
++		};
++	};
++
+ 	__overrides__ {
+-		pins_6_7 = <0>,"=1";
+-		pins_8_9 = <0>,"!1";
++		pins_6_7 = <0>,"=1!2";
++		pins_8_9 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/i2c5-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c5-overlay.dts
+@@ -6,10 +6,11 @@
+ 
+ 	fragment@0 {
+ 		target = <&i2c5>;
+-		__overlay__ {
++		frag0: __overlay__ {
+ 			status = "okay";
+ 			pinctrl-names = "default";
+ 			pinctrl-0 = <&i2c5_pins>;
++			clock-frequency = <100000>;
+ 		};
+ 	};
+ 
+@@ -20,8 +21,16 @@
+ 		};
+ 	};
+ 
++	fragment@2 {
++		target = <&i2c5_pins>;
++		__overlay__ {
++			brcm,pins = <12 13>;
++		};
++	};
++
+ 	__overrides__ {
+-		pins_10_11 = <0>,"=1";
+-		pins_12_13 = <0>,"!1";
++		pins_10_11 = <0>,"=1!2";
++		pins_12_13 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/i2c6-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c6-overlay.dts
+@@ -6,10 +6,11 @@
+ 
+ 	fragment@0 {
+ 		target = <&i2c6>;
+-		__overlay__ {
++		frag0: __overlay__ {
+ 			status = "okay";
+ 			pinctrl-names = "default";
+ 			pinctrl-0 = <&i2c6_pins>;
++			clock-frequency = <100000>;
+ 		};
+ 	};
+ 
+@@ -20,8 +21,16 @@
+ 		};
+ 	};
+ 
++	fragment@2 {
++		target = <&i2c6_pins>;
++		__overlay__ {
++			brcm,pins = <22 23>;
++		};
++	};
++
+ 	__overrides__ {
+-		pins_0_1 = <0>,"=1";
+-		pins_22_23 = <0>,"!1";
++		pins_0_1 = <0>,"=1!2";
++		pins_22_23 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
+ 	};
+ };