diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0707-ARM-bcm283x-Enable-DMA-support-for-SPI-controller.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0707-ARM-bcm283x-Enable-DMA-support-for-SPI-controller.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0707-ARM-bcm283x-Enable-DMA-support-for-SPI-controller.patch b/target/linux/bcm27xx/patches-4.19/950-0707-ARM-bcm283x-Enable-DMA-support-for-SPI-controller.patch deleted file mode 100644 index 27cd2aff50..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0707-ARM-bcm283x-Enable-DMA-support-for-SPI-controller.patch +++ /dev/null @@ -1,42 +0,0 @@ -From cce15c51f1afbb1aa9d5f7779c9f7c0a17b39701 Mon Sep 17 00:00:00 2001 -From: Lukas Wunner <lukas@wunner.de> -Date: Thu, 9 May 2019 19:03:00 +0200 -Subject: [PATCH] ARM: bcm283x: Enable DMA support for SPI controller -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Without this, the driver for the BCM2835 SPI controller uses interrupt -mode instead of DMA mode, incurring a significant performance penalty. -The Foundation's device tree has had these attributes for years, but for -some reason they were never upstreamed. - -They were originally contributed by Noralf Trønnes and Martin Sperl: -https://github.com/raspberrypi/linux/commit/25f3e064afc8 -https://github.com/raspberrypi/linux/commit/e0edb52b47e6 - -The DREQ numbers 6 and 7 are documented in section 4.2.1.3 of: -https://www.raspberrypi.org/app/uploads/2012/02/BCM2835-ARM-Peripherals.pdf - -Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> -Signed-off-by: Lukas Wunner <lukas@wunner.de> -Reviewed-by: Eric Anholt <eric@anholt.net> -Reviewed-by: Martin Sperl <kernel@martin.sperl.org> -Signed-off-by: Stefan Wahren <wahrenst@gmx.net> -Cc: Martin Sperl <kernel@martin.sperl.org> -Cc: Noralf Trønnes <noralf@tronnes.org> ---- - arch/arm/boot/dts/bcm283x.dtsi | 2 ++ - 1 file changed, 2 insertions(+) - ---- a/arch/arm/boot/dts/bcm283x.dtsi -+++ b/arch/arm/boot/dts/bcm283x.dtsi -@@ -403,6 +403,8 @@ - reg = <0x7e204000 0x200>; - interrupts = <2 22>; - clocks = <&clocks BCM2835_CLOCK_VPU>; -+ dmas = <&dma 6>, <&dma 7>; -+ dma-names = "tx", "rx"; - #address-cells = <1>; - #size-cells = <0>; - status = "disabled"; |