diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0957-overlays-Add-spi0-1cs-and-spi0-2cs.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0957-overlays-Add-spi0-1cs-and-spi0-2cs.patch | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0957-overlays-Add-spi0-1cs-and-spi0-2cs.patch b/target/linux/bcm27xx/patches-5.4/950-0957-overlays-Add-spi0-1cs-and-spi0-2cs.patch deleted file mode 100644 index 3af45bb0b6..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0957-overlays-Add-spi0-1cs-and-spi0-2cs.patch +++ /dev/null @@ -1,199 +0,0 @@ -From 692af7a59fd6d9d3b64edbf028cd75b0096ef8c7 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.com> -Date: Fri, 28 Aug 2020 12:55:41 +0100 -Subject: [PATCH] overlays: Add spi0-1cs and spi0-2cs - -The spi0-1cs overlay allows the SPI0 interface to be run with a single -CS line, which can be useful if GPIOs are in short supply. The no_miso -parameter is for write-only devices that don't need the return channel, -and again is there to free up a GPIO. - -spi0-2cs is the new name for spi0-cs (now deprecated with a redirect -to spi0-2cs), but with the addedd no_miso parameter. - -Signed-off-by: Phil Elwell <phil@raspberrypi.com> ---- - arch/arm/boot/dts/overlays/Makefile | 3 +- - arch/arm/boot/dts/overlays/README | 22 ++++++++-- - arch/arm/boot/dts/overlays/overlay_map.dts | 4 ++ - .../boot/dts/overlays/spi0-1cs-overlay.dts | 42 +++++++++++++++++++ - ...i0-cs-overlay.dts => spi0-2cs-overlay.dts} | 8 ++++ - 5 files changed, 75 insertions(+), 4 deletions(-) - create mode 100644 arch/arm/boot/dts/overlays/spi0-1cs-overlay.dts - rename arch/arm/boot/dts/overlays/{spi0-cs-overlay.dts => spi0-2cs-overlay.dts} (79%) - ---- a/arch/arm/boot/dts/overlays/Makefile -+++ b/arch/arm/boot/dts/overlays/Makefile -@@ -161,7 +161,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ - spi-gpio35-39.dtbo \ - spi-gpio40-45.dtbo \ - spi-rtc.dtbo \ -- spi0-cs.dtbo \ -+ spi0-1cs.dtbo \ -+ spi0-2cs.dtbo \ - spi1-1cs.dtbo \ - spi1-2cs.dtbo \ - spi1-3cs.dtbo \ ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -2412,11 +2412,27 @@ Load: dtoverlay=spi-rtc,<param>=<val> - Params: pcf2123 Select the PCF2123 device - - --Name: spi0-cs --Info: Allows the (software) CS pins for SPI0 to be changed --Load: dtoverlay=spi0-cs,<param>=<val> -+Name: spi0-1cs -+Info: Only use one CS pin for SPI0 -+Load: dtoverlay=spi0-1cs,<param>=<val> -+Params: cs0_pin GPIO pin for CS0 (default 8) -+ no_miso Don't claim and use the MISO pin (9), freeing -+ it for other uses. -+ -+ -+Name: spi0-2cs -+Info: Change the CS pins for SPI0 -+Load: dtoverlay=spi0-2cs,<param>=<val> - Params: cs0_pin GPIO pin for CS0 (default 8) - cs1_pin GPIO pin for CS1 (default 7) -+ no_miso Don't claim and use the MISO pin (9), freeing -+ it for other uses. -+ -+ -+Name: spi0-cs -+Info: This overlay has been renamed spi0-1cs, keeping spi0-cs as an -+ alias for backwards compatibility. -+Load: <Deprecated> - - - Name: spi0-hw-cs ---- a/arch/arm/boot/dts/overlays/overlay_map.dts -+++ b/arch/arm/boot/dts/overlays/overlay_map.dts -@@ -61,6 +61,10 @@ - deprecated = "use sdio,bus_width=1,gpios_22_25"; - }; - -+ spi0-cs { -+ renamed = "spi0-2cs"; -+ }; -+ - spi0-hw-cs { - deprecated = "no longer necessary"; - }; ---- /dev/null -+++ b/arch/arm/boot/dts/overlays/spi0-1cs-overlay.dts -@@ -0,0 +1,42 @@ -+/dts-v1/; -+/plugin/; -+ -+ -+/ { -+ compatible = "brcm,bcm2835"; -+ -+ fragment@0 { -+ target = <&spi0_cs_pins>; -+ frag0: __overlay__ { -+ brcm,pins = <8>; -+ }; -+ }; -+ -+ fragment@1 { -+ target = <&spi0>; -+ frag1: __overlay__ { -+ cs-gpios = <&gpio 8 1>; -+ status = "okay"; -+ }; -+ }; -+ -+ fragment@2 { -+ target = <&spidev1>; -+ __overlay__ { -+ status = "disabled"; -+ }; -+ }; -+ -+ fragment@3 { -+ target = <&spi0_pins>; -+ __dormant__ { -+ brcm,pins = <10 11>; -+ }; -+ }; -+ -+ __overrides__ { -+ cs0_pin = <&frag0>,"brcm,pins:0", -+ <&frag1>,"cs-gpios:4"; -+ no_miso = <0>,"=3"; -+ }; -+}; ---- a/arch/arm/boot/dts/overlays/spi0-cs-overlay.dts -+++ /dev/null -@@ -1,29 +0,0 @@ --/dts-v1/; --/plugin/; -- -- --/ { -- compatible = "brcm,bcm2835"; -- -- fragment@0 { -- target = <&spi0_cs_pins>; -- frag0: __overlay__ { -- brcm,pins = <8 7>; -- }; -- }; -- -- fragment@1 { -- target = <&spi0>; -- frag1: __overlay__ { -- cs-gpios = <&gpio 8 1>, <&gpio 7 1>; -- status = "okay"; -- }; -- }; -- -- __overrides__ { -- cs0_pin = <&frag0>,"brcm,pins:0", -- <&frag1>,"cs-gpios:4"; -- cs1_pin = <&frag0>,"brcm,pins:4", -- <&frag1>,"cs-gpios:16"; -- }; --}; ---- /dev/null -+++ b/arch/arm/boot/dts/overlays/spi0-2cs-overlay.dts -@@ -0,0 +1,37 @@ -+/dts-v1/; -+/plugin/; -+ -+ -+/ { -+ compatible = "brcm,bcm2835"; -+ -+ fragment@0 { -+ target = <&spi0_cs_pins>; -+ frag0: __overlay__ { -+ brcm,pins = <8 7>; -+ }; -+ }; -+ -+ fragment@1 { -+ target = <&spi0>; -+ frag1: __overlay__ { -+ cs-gpios = <&gpio 8 1>, <&gpio 7 1>; -+ status = "okay"; -+ }; -+ }; -+ -+ fragment@2 { -+ target = <&spi0_pins>; -+ __dormant__ { -+ brcm,pins = <10 11>; -+ }; -+ }; -+ -+ __overrides__ { -+ cs0_pin = <&frag0>,"brcm,pins:0", -+ <&frag1>,"cs-gpios:4"; -+ cs1_pin = <&frag0>,"brcm,pins:4", -+ <&frag1>,"cs-gpios:16"; -+ no_miso = <0>,"=2"; -+ }; -+}; |