From d317344d6e5ecc8cfa90463e801f9ec60bb4ef50 Mon Sep 17 00:00:00 2001
From: Stephan Gerhold <stephan@gerhold.net>
Date: Sun, 10 Apr 2022 21:51:12 +0200
Subject: [PATCH] arm64: dts: qcom: msm8916-huawei-g7: Clarify installation instructions
Git-commit: d317344d6e5ecc8cfa90463e801f9ec60bb4ef50
Patch-mainline: v5.19-rc1
References: git-fixes

The comment with installation instructions in the huawei-g7 device tree
is a bit misleading and does not describe the recommended installation
steps very well. The bootloader is actually not patched; to avoid all
trouble with the vendor bootloader it is easier to bypass it completely
by jumping to a custom bootloader (e.g. based on the open-source LK
released by Qualcomm).

To avoid confusion, simplify the comment to state only the problem
and then refer to the wiki article which contains detailed suggested
installation instructions. This will also make it easier to keep it
up to date with new developments in the future.

Fixes: 55056b229189 ("arm64: dts: qcom: msm8916: Add device tree for Huawei Ascend G7")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220410195113.13646-2-stephan@gerhold.net
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
index 42d93d3fba36..8ad9eb436a0c 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
@@ -11,15 +11,10 @@
 
 /*
  * Note: The original firmware from Huawei can only boot 32-bit kernels.
- * To boot arm64 kernels it is necessary to flash 64-bit TZ/HYP firmware
- * with EDL, e.g. taken from the DragonBoard 410c. This works because Huawei
- * forgot to set up (firmware) secure boot for some reason.
- *
- * Also note that Huawei no longer provides bootloader unlock codes.
- * This can be bypassed by patching the bootloader from a custom HYP firmware,
- * making it think the bootloader is unlocked.
- *
- * See: https://wiki.postmarketos.org/wiki/Huawei_Ascend_G7_(huawei-g7)
+ * To boot this device tree using arm64 it is necessary to flash 64-bit TZ/HYP
+ * firmware (e.g. taken from the DragonBoard 410c).
+ * See https://wiki.postmarketos.org/wiki/Huawei_Ascend_G7_(huawei-g7)
+ * for suggested installation instructions.
  */
 
 / {
-- 
2.35.3