diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0692-ARM-dts-bcm2711-Allow-40-bit-DMA-for-SPI.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0692-ARM-dts-bcm2711-Allow-40-bit-DMA-for-SPI.patch | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0692-ARM-dts-bcm2711-Allow-40-bit-DMA-for-SPI.patch b/target/linux/bcm27xx/patches-5.4/950-0692-ARM-dts-bcm2711-Allow-40-bit-DMA-for-SPI.patch deleted file mode 100644 index ac6543fe4f..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0692-ARM-dts-bcm2711-Allow-40-bit-DMA-for-SPI.patch +++ /dev/null @@ -1,40 +0,0 @@ -From 0dcafa8ab800d1f534bb0cb51cd02a082cf34be6 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.com> -Date: Thu, 30 Apr 2020 12:43:05 +0100 -Subject: [PATCH] ARM: dts: bcm2711: Allow 40-bit DMA for SPI - -Add the spi_dma4 DT parameter to enable use of the 40-bit DMA channels -to drive SPI. Note that there are only 3-4 40-bit channels available, -and using this parameter claims 2 of them. - -Usage: dtparam=spi_dma4 - -Signed-off-by: Phil Elwell <phil@raspberrypi.com> ---- - arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 2 ++ - arch/arm/boot/dts/overlays/README | 4 ++++ - 2 files changed, 6 insertions(+) - ---- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts -+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts -@@ -554,5 +554,7 @@ - eth_led0 = <&phy1>,"led-modes:0"; - eth_led1 = <&phy1>,"led-modes:4"; - -+ spi_dma4 = <&spi0>, "dmas:0=", <&dma40>, -+ <&spi0>, "dmas:8=", <&dma40>; - }; - }; ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -159,6 +159,10 @@ Params: - spi Set to "on" to enable the spi interfaces - (default "off") - -+ spi_dma4 Use to enable 40-bit DMA on spi interfaces -+ (the assigned value doesn't matter) -+ (2711 only) -+ - random Set to "on" to enable the hardware random - number generator (default "on") - |