diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch new file mode 100644 index 0000000000..15feadbe65 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch @@ -0,0 +1,206 @@ +From 637535797f538a24a0ce2225185b24b14aa20d51 Mon Sep 17 00:00:00 2001 +From: GabyPCgeeK <GabyPCgeeK@users.noreply.github.com> +Date: Mon, 27 Sep 2021 04:43:21 -0400 +Subject: [PATCH] overlays: Add generic mcp2515 overlay + +Can configure mcp2515 on spi0/1/2 without the need for multiple overlays. +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 15 ++ + .../arm/boot/dts/overlays/mcp2515-overlay.dts | 156 ++++++++++++++++++ + 3 files changed, 172 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/mcp2515-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -113,6 +113,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + mbed-dac.dtbo \ + mcp23017.dtbo \ + mcp23s17.dtbo \ ++ mcp2515.dtbo \ + mcp2515-can0.dtbo \ + mcp2515-can1.dtbo \ + mcp251xfd.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1977,6 +1977,21 @@ Params: s08-spi<n>-<m>-present 4-bit in + or INTB output of MCP23S17 is connected. + + ++Name: mcp2515 ++Info: Configures the MCP2515 CAN controller on spi0/1/2 ++ 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. ++Load: dtoverlay=mcp2515,<param>=<val> ++Params: spi<n>-<m> Configure device at spi<n>, cs<m> ++ (boolean, required) ++ ++ oscillator Clock frequency for the CAN controller (Hz) ++ ++ speed Maximum SPI frequence (Hz) ++ ++ interrupt GPIO for interrupt signal ++ ++ + Name: mcp2515-can0 + Info: Configures the MCP2515 CAN controller on spi0.0 + Load: dtoverlay=mcp2515-can0,<param>=<val> +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/mcp2515-overlay.dts +@@ -0,0 +1,156 @@ ++// SPDX-License-Identifier: (GPL-2.0 OR MIT) ++ ++/dts-v1/; ++/plugin/; ++ ++#include <dt-bindings/gpio/gpio.h> ++#include <dt-bindings/interrupt-controller/irq.h> ++#include <dt-bindings/pinctrl/bcm2835.h> ++ ++/ { ++ 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 = <&gpio>; ++ __overlay__ { ++ mcp2515_pins: mcp2515_pins { ++ brcm,pins = <25>; ++ brcm,function = <BCM2835_FSEL_GPIO_IN>; ++ }; ++ }; ++ }; ++ ++ fragment@9 { ++ target-path = "/clocks"; ++ __overlay__ { ++ clk_mcp2515_osc: mcp2515-osc { ++ #clock-cells = <0>; ++ compatible = "fixed-clock"; ++ clock-frequency = <16000000>; ++ }; ++ }; ++ }; ++ ++ mcp2515_frag: fragment@10 { ++ target = <&spi0>; ++ __overlay__ { ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ mcp2515: mcp2515@0 { ++ compatible = "microchip,mcp2515"; ++ reg = <0>; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mcp2515_pins>; ++ spi-max-frequency = <10000000>; ++ interrupt-parent = <&gpio>; ++ interrupts = <25 IRQ_TYPE_LEVEL_LOW>; ++ clocks = <&clk_mcp2515_osc>; ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ spi0-0 = <0>, "+0", ++ <&mcp2515_frag>, "target:0=", <&spi0>, ++ <&mcp2515>, "reg:0=0", ++ <&mcp2515_pins>, "name=mcp2515_spi0_0_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi0-0-osc"; ++ spi0-1 = <0>, "+1", ++ <&mcp2515_frag>, "target:0=", <&spi0>, ++ <&mcp2515>, "reg:0=1", ++ <&mcp2515_pins>, "name=mcp2515_spi0_1_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi0-1-osc"; ++ spi1-0 = <0>, "+2", ++ <&mcp2515_frag>, "target:0=", <&spi1>, ++ <&mcp2515>, "reg:0=0", ++ <&mcp2515_pins>, "name=mcp2515_spi1_0_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi1-0-osc"; ++ spi1-1 = <0>, "+3", ++ <&mcp2515_frag>, "target:0=", <&spi1>, ++ <&mcp2515>, "reg:0=1", ++ <&mcp2515_pins>, "name=mcp2515_spi1_1_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi1-1-osc"; ++ spi1-2 = <0>, "+4", ++ <&mcp2515_frag>, "target:0=", <&spi1>, ++ <&mcp2515>, "reg:0=2", ++ <&mcp2515_pins>, "name=mcp2515_spi1_2_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi1-2-osc"; ++ spi2-0 = <0>, "+5", ++ <&mcp2515_frag>, "target:0=", <&spi2>, ++ <&mcp2515>, "reg:0=0", ++ <&mcp2515_pins>, "name=mcp2515_spi2_0_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi2-0-osc"; ++ spi2-1 = <0>, "+6", ++ <&mcp2515_frag>, "target:0=", <&spi2>, ++ <&mcp2515>, "reg:0=1", ++ <&mcp2515_pins>, "name=mcp2515_spi2_1_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi2-1-osc"; ++ spi2-2 = <0>, "+7", ++ <&mcp2515_frag>, "target:0=", <&spi2>, ++ <&mcp2515>, "reg:0=2", ++ <&mcp2515_pins>, "name=mcp2515_spi2_2_pins", ++ <&clk_mcp2515_osc>, "name=mcp2515-spi2-2-osc"; ++ oscillator = <&clk_mcp2515_osc>, "clock-frequency:0"; ++ speed = <&mcp2515>, "spi-max-frequency:0"; ++ interrupt = <&mcp2515_pins>, "brcm,pins:0", ++ <&mcp2515>, "interrupts:0"; ++ }; ++}; |