brcm2708: update linux 4.4 patches to latest version

[openwrt/staging/yousong.git] / target / linux / brcm2708 / patches-4.4 / 0408-BCM270X_DT-Add-spi-rtc-overlay-on-SPI0.0.patch

diff --git a/target/linux/brcm2708/patches-4.4/0408-BCM270X_DT-Add-spi-rtc-overlay-on-SPI0.0.patch b/target/linux/brcm2708/patches-4.4/0408-BCM270X_DT-Add-spi-rtc-overlay-on-SPI0.0.patch
new file mode 100644 (file)
index 0000000..1b53b9a
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0408-BCM270X_DT-Add-spi-rtc-overlay-on-SPI0.0.patch
@@ -0,0 +1,76 @@
+From 6790d3a4683d7e2e6e0fe1bbc7ab856f23e37885 Mon Sep 17 00:00:00 2001
+From: Thomas Kriechbaumer <thomas@kriechbaumer.name>
+Date: Fri, 3 Jun 2016 09:40:44 +0200
+Subject: [PATCH] BCM270X_DT: Add spi-rtc overlay on SPI0.0
+
+Initial version only supports PCF2123 RTC.
+
+See: https://github.com/raspberrypi/linux/pull/1510
+---
+ arch/arm/boot/dts/overlays/Makefile            |  1 +
+ arch/arm/boot/dts/overlays/README              |  6 +++++
+ arch/arm/boot/dts/overlays/spi-rtc-overlay.dts | 33 ++++++++++++++++++++++++++
+ 3 files changed, 40 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -78,6 +78,7 @@ dtbo-$(RPI_DT_OVERLAYS) += smi.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += smi-dev.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += smi-nand.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += spi-gpio35-39.dtbo
++dtbo-$(RPI_DT_OVERLAYS) += spi-rtc.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += spi1-1cs.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += spi1-2cs.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += spi1-3cs.dtbo
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -975,6 +975,12 @@ Load:   dtoverlay=spi-gpio35-39
+ Params: <None>
+ 
+ 
++Name:   spi-rtc
++Info:   Adds support for a number of SPI Real Time Clock devices
++Load:   dtoverlay=spi-rtc,<param>=<val>
++Params: pcf2123                 Select the PCF2123 device
++
++
+ Name:   spi1-1cs
+ Info:   Enables spi1 with a single chip select (CS) line and associated spidev
+         dev node. The gpio pin number for the CS line and spidev device node
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
+@@ -0,0 +1,33 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++      compatible = "brcm,bcm2708";
++
++      fragment@0 {
++              target = <&spidev0>;
++              __dormant__ {
++                      status = "disabled";
++              };
++      };
++
++      fragment@1 {
++              target = <&spi0>;
++              __dormant__ {
++                      #address-cells = <1>;
++                      #size-cells = <0>;
++                      status = "okay";
++
++                      rtc-pcf2123@0 {
++                              compatible = "nxp,rtc-pcf2123";
++                              spi-max-frequency = <5000000>;
++                              spi-cs-high = <1>;
++                              reg = <0>;
++                      };
++              };
++      };
++
++      __overrides__ {
++              pcf2123 = <0>, "=0=1";
++      };
++};