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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-03-16 20:41:03 +0100 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-03-16 21:24:23 +0100 |
commit | 0f6d04457a64f2393b05f662dc8d381ea1963c66 (patch) | |
tree | 2d6a3c82d5e6d02b030b16df66da8bf9209b02ec /target/linux/bcm27xx/patches-5.4/950-0396-Add-universal-device-tree-overlay-for-SPI-devices.patch | |
parent | d890f85e59617228b1e76e8cf45a9309904d9124 (diff) | |
download | upstream-0f6d04457a64f2393b05f662dc8d381ea1963c66.tar.gz upstream-0f6d04457a64f2393b05f662dc8d381ea1963c66.tar.bz2 upstream-0f6d04457a64f2393b05f662dc8d381ea1963c66.zip |
bcm27xx: sync 5.4 patches with RPi Foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0396-Add-universal-device-tree-overlay-for-SPI-devices.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0396-Add-universal-device-tree-overlay-for-SPI-devices.patch | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0396-Add-universal-device-tree-overlay-for-SPI-devices.patch b/target/linux/bcm27xx/patches-5.4/950-0396-Add-universal-device-tree-overlay-for-SPI-devices.patch new file mode 100644 index 0000000000..cb8fa91bef --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0396-Add-universal-device-tree-overlay-for-SPI-devices.patch @@ -0,0 +1,273 @@ +From 17159731ae064a70031d746284855b7d30f17407 Mon Sep 17 00:00:00 2001 +From: Ed Spiridonov <edo.rus@gmail.com> +Date: Tue, 10 Dec 2019 22:45:04 +0300 +Subject: [PATCH] Add universal device tree overlay for SPI devices + +Just specify the SPI address and device name ("compatible" property). +This overlay lacks any device-specific parameter support! +(some of them could be added later) + +Examples: +1. SPI NOR flash on spi0.1, maximum SPI clock frequency 45MHz: + dtoverlay=anyspi:spi0-1,dev="jedec,spi-nor",speed=45000000 +2. MCP3204 ADC on spi1.2, maximum SPI clock frequency 500kHz: + dtoverlay=anyspi:spi1-2,dev="microchip,mcp3204" + +Signed-off-by: Ed Spiridonov <edo.rus@gmail.com> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 23 ++ + arch/arm/boot/dts/overlays/anyspi-overlay.dts | 205 ++++++++++++++++++ + 3 files changed, 229 insertions(+) + create mode 100755 arch/arm/boot/dts/overlays/anyspi-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -15,6 +15,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + allo-katana-dac-audio.dtbo \ + allo-piano-dac-pcm512x-audio.dtbo \ + allo-piano-dac-plus-pcm512x-audio.dtbo \ ++ anyspi.dtbo \ + apds9960.dtbo \ + applepi-dac.dtbo \ + at86rf233.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -441,6 +441,29 @@ Params: 24db_digital_gain Allow ga + better voice quality. (default Off) + + ++Name: anyspi ++Info: Universal device tree overlay for SPI devices ++ ++ Just specify the SPI address and device name ("compatible" property). ++ This overlay lacks any device-specific parameter support! ++ ++ For devices on spi1 or spi2, the interfaces should be enabled ++ with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays. ++ ++ Examples: ++ 1. SPI NOR flash on spi0.1, maximum SPI clock frequency 45MHz: ++ dtoverlay=anyspi:spi0-1,dev="jedec,spi-nor",speed=45000000 ++ 2. MCP3204 ADC on spi1.2, maximum SPI clock frequency 500kHz: ++ dtoverlay=anyspi:spi1-2,dev="microchip,mcp3204" ++Load: dtoverlay=anyspi,<param>=<val> ++Params: spi<n>-<m> Configure device at spi<n>, cs<m> ++ (boolean, required) ++ dev Set device name to search compatible module ++ (string, required) ++ speed Set SPI clock frequency in Hz ++ (integer, optional, default 500000) ++ ++ + Name: apds9960 + Info: Configures the AVAGO APDS9960 digital proximity, ambient light, RGB and + gesture sensor +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/anyspi-overlay.dts +@@ -0,0 +1,205 @@ ++/* ++ * Universal device tree overlay for SPI devices ++ */ ++ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target = <&spidev0>; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&spidev1>; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@2 { ++ target-path = "spi1/spidev@0"; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@3 { ++ target-path = "spi1/spidev@1"; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@4 { ++ target-path = "spi1/spidev@2"; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@5 { ++ target-path = "spi2/spidev@0"; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@6 { ++ target-path = "spi2/spidev@1"; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@7 { ++ target-path = "spi2/spidev@2"; ++ __dormant__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@8 { ++ target = <&spi0>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_00: anyspi@0 { ++ reg = <0>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@9 { ++ target = <&spi0>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_01: anyspi@1 { ++ reg = <1>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@10 { ++ target = <&spi1>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_10: anyspi@0 { ++ reg = <0>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@11 { ++ target = <&spi1>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_11: anyspi@1 { ++ reg = <1>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@12 { ++ target = <&spi1>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_12: anyspi@2 { ++ reg = <2>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@13 { ++ target = <&spi2>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_20: anyspi@0 { ++ reg = <0>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@14 { ++ target = <&spi2>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_21: anyspi@1 { ++ reg = <1>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ fragment@15 { ++ target = <&spi2>; ++ __dormant__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ anyspi_22: anyspi@2 { ++ reg = <2>; ++ spi-max-frequency = <500000>; ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ spi0-0 = <0>, "+0+8"; ++ spi0-1 = <0>, "+1+9"; ++ spi1-0 = <0>, "+2+10"; ++ spi1-1 = <0>, "+3+11"; ++ spi1-2 = <0>, "+4+12"; ++ spi2-0 = <0>, "+5+13"; ++ spi2-1 = <0>, "+6+14"; ++ spi2-2 = <0>, "+7+15"; ++ dev = <&anyspi_00>,"compatible", ++ <&anyspi_01>,"compatible", ++ <&anyspi_10>,"compatible", ++ <&anyspi_11>,"compatible", ++ <&anyspi_12>,"compatible", ++ <&anyspi_20>,"compatible", ++ <&anyspi_21>,"compatible", ++ <&anyspi_22>,"compatible"; ++ speed = <&anyspi_00>, "spi-max-frequency:0", ++ <&anyspi_01>, "spi-max-frequency:0", ++ <&anyspi_10>, "spi-max-frequency:0", ++ <&anyspi_11>, "spi-max-frequency:0", ++ <&anyspi_12>, "spi-max-frequency:0", ++ <&anyspi_20>, "spi-max-frequency:0", ++ <&anyspi_21>, "spi-max-frequency:0", ++ <&anyspi_22>, "spi-max-frequency:0"; ++ }; ++}; |