mirror of
git://git.yoctoproject.org/meta-rockchip.git
synced 2025-07-05 05:04:47 +02:00
trusted-firmware-a: use 1500000 baud for serial console
TF-A runs between two u-boot stages which both uses 1500000 baud, it just makes no sense to use the same UART at a different rate. Here is a sample session with the successive stages, with TF-A artificially separated for emphasis: [20210406-175438.135934] U-Boot TPL 2021.01 (Jan 11 2021 - 18:11:43) [20210406-175438.135956] Channel 0: DDR3, 933MHz [20210406-175438.236974] BW=32 Col=10 Bk=8 CS0 Row=15 CS=1 Die BW=16 Size=1024MB [20210406-175438.237000] Channel 1: DDR3, 933MHz [20210406-175438.237004] BW=32 Col=10 Bk=8 CS0 Row=15 CS=1 Die BW=16 Size=1024MB [20210406-175438.237008] 256B stride [20210406-175438.237012] Trying to boot from BOOTROM [20210406-175438.237015] Returning to boot ROM... [20210406-175438.237018] [20210406-175438.573394] U-Boot SPL 2021.01 (Jan 11 2021 - 18:11:43 +0000) [20210406-175438.573431] Trying to boot from MMC1 [20210406-175438.589254] NOTICE: BL31: v2.3():v2.3-dirty [20210406-175440.534055] NOTICE: BL31: Built : 15:56:43, Apr 20 2020 [20210406-175441.393423] U-Boot 2021.01 (Jan 11 2021 - 18:11:43 +0000) [20210406-175441.393429] [20210406-175441.393433] SoC: Rockchip rk3399 Signed-off-by: Yann Dirson <yann@blade-group.com>
This commit is contained in:
parent
cd11f61a51
commit
d47180f7f6
|
@ -0,0 +1,36 @@
|
|||
From 840d6b6420e1fd8cdf6e4de7fa58a6f8de151622 Mon Sep 17 00:00:00 2001
|
||||
From: Yann Dirson <yann@blade-group.com>
|
||||
Date: Tue, 6 Apr 2021 17:28:45 +0200
|
||||
Subject: [PATCH] Set serial console baudrate back to 1500000.
|
||||
Upstream-Status: Inappropriate[other]
|
||||
|
||||
TF-A runs between two u-boot stages which both uses 1500000 baud, it
|
||||
just makes no sense to use the same UART at a different rate.
|
||||
|
||||
This effectively reverts part of 0c05748bdebfad9fa43a80962186438bb8fbce62.
|
||||
Main reason for that change stated in https://developer.trustedfirmware.org/T762
|
||||
is ChromeOS compatibility.
|
||||
|
||||
Looks like this patch may become unnecessary in the future, when
|
||||
u-boot and TF-A get to communicate this value.
|
||||
|
||||
---
|
||||
plat/rockchip/rk3399/rk3399_def.h | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
diff --git a/plat/rockchip/rk3399/rk3399_def.h b/plat/rockchip/rk3399/rk3399_def.h
|
||||
index ba83242eb..8d6ecfbe6 100644
|
||||
--- a/plat/rockchip/rk3399/rk3399_def.h
|
||||
+++ b/plat/rockchip/rk3399/rk3399_def.h
|
||||
@@ -17,7 +17,7 @@
|
||||
/**************************************************************************
|
||||
* UART related constants
|
||||
**************************************************************************/
|
||||
-#define RK3399_BAUDRATE 115200
|
||||
+#define RK3399_BAUDRATE 1500000
|
||||
#define RK3399_UART_CLOCK 24000000
|
||||
|
||||
/******************************************************************************
|
||||
--
|
||||
2.30.2
|
||||
|
|
@ -4,3 +4,8 @@ DEPENDS_append_rk3399 = " virtual/arm-none-eabi-gcc-native"
|
|||
|
||||
COMPATIBLE_MACHINE_append_rk3399 = "|rk3399"
|
||||
COMPATIBLE_MACHINE_append_rk3328 = "|rk3328"
|
||||
|
||||
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
|
||||
SRC_URI += "\
|
||||
file://serial-console-baudrate.patch \
|
||||
"
|
||||
|
|
Loading…
Reference in New Issue
Block a user