diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0756-overlays-Add-spi0-overlay-to-support-sc16is752.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0756-overlays-Add-spi0-overlay-to-support-sc16is752.patch | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0756-overlays-Add-spi0-overlay-to-support-sc16is752.patch b/target/linux/bcm27xx/patches-5.4/950-0756-overlays-Add-spi0-overlay-to-support-sc16is752.patch new file mode 100644 index 0000000000..afd760b8f3 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0756-overlays-Add-spi0-overlay-to-support-sc16is752.patch @@ -0,0 +1,87 @@ +From b2998ffa15aabea3292159ca20973f45ed9cb4b0 Mon Sep 17 00:00:00 2001 +From: bjorn <beikeland@gmail.com> +Date: Thu, 7 May 2020 05:11:43 +0200 +Subject: [PATCH] overlays: Add spi0 overlay to support sc16is752 + +Signed-off-by: Bjorn <beikeland@gmail.com> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 8 ++++ + .../dts/overlays/sc16is752-spi0-overlay.dts | 44 +++++++++++++++++++ + 3 files changed, 53 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/sc16is752-spi0-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -143,6 +143,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + rra-digidac1-wm8741-audio.dtbo \ + sc16is750-i2c.dtbo \ + sc16is752-i2c.dtbo \ ++ sc16is752-spi0.dtbo \ + sc16is752-spi1.dtbo \ + sdhost.dtbo \ + sdio.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -2144,6 +2144,14 @@ Params: int_pin GPIO use + xtal On-board crystal frequency (default 14745600) + + ++Name: sc16is752-spi0 ++Info: Overlay for the NXP SC16IS752 Dual UART with SPI Interface ++ Enables the chip on SPI0. ++Load: dtoverlay=sc16is752-spi0,<param>=<val> ++Params: int_pin GPIO used for IRQ (default 24) ++ xtal On-board crystal frequency (default 14745600) ++ ++ + Name: sc16is752-spi1 + Info: Overlay for the NXP SC16IS752 Dual UART with SPI Interface + Enables the chip on SPI1. +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/sc16is752-spi0-overlay.dts +@@ -0,0 +1,44 @@ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target = <&spi0>; ++ __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ sc16is752: sc16is752@0 { ++ compatible = "nxp,sc16is752"; ++ reg = <0>; /* CE0 */ ++ clocks = <&sc16is752_clk>; ++ interrupt-parent = <&gpio>; ++ interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */ ++ #gpio-controller; ++ #gpio-cells = <2>; ++ spi-max-frequency = <4000000>; ++ ++ sc16is752_clk: sc16is752_clk { ++ compatible = "fixed-clock"; ++ #clock-cells = <0>; ++ clock-frequency = <14745600>; ++ }; ++ }; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&spidev0>; ++ __overlay__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ __overrides__ { ++ int_pin = <&sc16is752>,"interrupts:0"; ++ xtal = <&sc16is752_clk>, "clock-frequency:0"; ++ }; ++}; |