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| author | Daniel Golle <daniel@makrotopia.org> | 2022-09-03 01:57:08 +0100 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2022-09-03 02:03:42 +0100 |
| commit | 93e6581b900cfbead7888046c8ff7caa1eb79317 (patch) | |
| tree | 2f2d30ce437a38a98ced0fcf6e950a3eefb9a152 | |
| parent | 3889f90ee27f129340dc0ae7efccf8165e0fbe30 (diff) | |
| download | upstream-93e6581b900cfbead7888046c8ff7caa1eb79317.tar.gz upstream-93e6581b900cfbead7888046c8ff7caa1eb79317.tar.bz2 upstream-93e6581b900cfbead7888046c8ff7caa1eb79317.zip | |
uboot-mediatek: backport fix for unstable UART on MT7622
Import pending patch "arm: dts: mt7622: force high-speed mode for uart"
from Weijie Gao <weijie.gao@mediatek.com> fixing the UART problems on
MT7622 which made it hard to use the U-Boot menu on devices with this
SoC.
This patch is also contained in commit
c09eb08dad ("uboot-mediatek: add support for MT798x platforms")
in the development branch.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
| -rw-r--r-- | package/boot/uboot-mediatek/patches/002-0011-arm-dts-mt7622-force-high-speed-mode-for-uart.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/package/boot/uboot-mediatek/patches/002-0011-arm-dts-mt7622-force-high-speed-mode-for-uart.patch b/package/boot/uboot-mediatek/patches/002-0011-arm-dts-mt7622-force-high-speed-mode-for-uart.patch new file mode 100644 index 0000000000..9bd7a9e64d --- /dev/null +++ b/package/boot/uboot-mediatek/patches/002-0011-arm-dts-mt7622-force-high-speed-mode-for-uart.patch @@ -0,0 +1,26 @@ +From 79786aa175010dde78f95970939e8efadd7a3295 Mon Sep 17 00:00:00 2001 +From: Weijie Gao <weijie.gao@mediatek.com> +Date: Wed, 31 Aug 2022 19:04:34 +0800 +Subject: [PATCH 11/32] arm: dts: mt7622: force high-speed mode for uart + +The input clock for uart is too slow (25MHz) which introduces frequent data +error on both receiving and transmitting even if the baudrate is 115200. + +Using high-speed can significantly solve this issue. + +Reviewed-by: Simon Glass <sjg@chromium.org> +Signed-off-by: Weijie Gao <weijie.gao@mediatek.com> +--- + arch/arm/dts/mt7622.dtsi | 1 + + 1 file changed, 1 insertion(+) + +--- a/arch/arm/dts/mt7622.dtsi ++++ b/arch/arm/dts/mt7622.dtsi +@@ -191,6 +191,7 @@ + status = "disabled"; + assigned-clocks = <&topckgen CLK_TOP_AXI_SEL>; + assigned-clock-parents = <&topckgen CLK_TOP_SYSPLL1_D2>; ++ mediatek,force-highspeed; + }; + + mmc0: mmc@11230000 { |