mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
8299d1f057
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted patches, wireless patches and defconfig patches. bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 4B v1.1 4G bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
126 lines
3.3 KiB
Diff
126 lines
3.3 KiB
Diff
From 8273b9e71c1f5c1f6f74faac21de64bf42686817 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
|
Date: Mon, 19 Apr 2021 10:33:24 +0100
|
|
Subject: [PATCH] overlays: spi-rtc: Add ds3232 and ds3234
|
|
|
|
Extend the spi-rtc overlay to support the ds3232 and ds3234 RTCs, as
|
|
well as adding parameters to select difference SPI controllers and
|
|
chip selects.
|
|
|
|
N.B. The default CS is now active-low - use the "cs_high" parameter to
|
|
override this.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
|
---
|
|
arch/arm/boot/dts/overlays/README | 12 +++-
|
|
.../arm/boot/dts/overlays/spi-rtc-overlay.dts | 58 ++++++++++++++++---
|
|
2 files changed, 61 insertions(+), 9 deletions(-)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -2689,7 +2689,17 @@ 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
|
|
+Params: ds3232 Select the DS3232 device
|
|
+ ds3234 Select the DS3234 device
|
|
+ pcf2123 Select the PCF2123 device
|
|
+
|
|
+ spi0_0 Use spi0.0 (default)
|
|
+ spi0_1 Use spi0.1
|
|
+ spi1_0 Use spi1.0
|
|
+ spi1_1 Use spi1.1
|
|
+ spi2_0 Use spi2.0
|
|
+ spi2_1 Use spi2.1
|
|
+ cs_high This device requires an active-high CS
|
|
|
|
|
|
Name: spi0-1cs
|
|
--- a/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
|
|
@@ -1,3 +1,4 @@
|
|
+// Definitions for several SPI-based Real Time Clocks
|
|
/dts-v1/;
|
|
/plugin/;
|
|
|
|
@@ -5,29 +6,70 @@
|
|
compatible = "brcm,bcm2835";
|
|
|
|
fragment@0 {
|
|
- target = <&spidev0>;
|
|
+ target = <&rtc>;
|
|
__dormant__ {
|
|
- status = "disabled";
|
|
+ compatible = "maxim,ds3232";
|
|
};
|
|
};
|
|
|
|
fragment@1 {
|
|
- target = <&spi0>;
|
|
+ target = <&rtc>;
|
|
+ __dormant__ {
|
|
+ compatible = "maxim,ds3234";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@2 {
|
|
+ target = <&rtc>;
|
|
__dormant__ {
|
|
+ compatible = "nxp,rtc-pcf2123";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ spidev: fragment@100 {
|
|
+ target = <&spidev0>;
|
|
+ __overlay__ {
|
|
+ status = "disabled";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ frag101: fragment@101 {
|
|
+ target = <&spi0>;
|
|
+ __overlay__ {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
status = "okay";
|
|
|
|
- rtc-pcf2123@0 {
|
|
- compatible = "nxp,rtc-pcf2123";
|
|
- spi-max-frequency = <5000000>;
|
|
- spi-cs-high = <1>;
|
|
+ rtc: rtc@0 {
|
|
reg = <0>;
|
|
+ spi-max-frequency = <5000000>;
|
|
};
|
|
};
|
|
};
|
|
|
|
__overrides__ {
|
|
- pcf2123 = <0>, "=0=1";
|
|
+ spi0_0 = <&spidev>, "target:0=",<&spidev0>,
|
|
+ <&frag101>, "target:0=",<&spi0>,
|
|
+ <&rtc>, "reg:0=0";
|
|
+ spi0_1 = <&spidev>, "target:0=",<&spidev1>,
|
|
+ <&frag101>, "target:0=",<&spi0>,
|
|
+ <&rtc>, "reg:0=1";
|
|
+ spi1_0 = <0>,"-100",
|
|
+ <&frag101>, "target:0=",<&spi1>,
|
|
+ <&rtc>, "reg:0=0";
|
|
+ spi1_1 = <0>,"-100",
|
|
+ <&frag101>, "target:0=",<&spi1>,
|
|
+ <&rtc>, "reg:0=1";
|
|
+ spi2_0 = <0>,"-100",
|
|
+ <&frag101>, "target:0=",<&spi2>,
|
|
+ <&rtc>, "reg:0=0";
|
|
+ spi2_1 = <0>,"-100",
|
|
+ <&frag101>, "target:0=",<&spi2>,
|
|
+ <&rtc>, "reg:0=1";
|
|
+ cs_high = <&rtc>, "spi-cs-high?";
|
|
+
|
|
+ ds3232 = <0>,"+0";
|
|
+ ds3234 = <0>,"+1";
|
|
+ pcf2123 = <0>,"+2";
|
|
};
|
|
};
|