From: Petr Vorel <petr.vorel@gmail.com>
To: linux-arm-msm@vger.kernel.org
Cc: Petr Vorel <petr.vorel@gmail.com>, Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Ricardo Ribalda <ribalda@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Konrad Dybcio <konradybcio@gmail.com>,
devicetree@vger.kernel.org
Subject: [PATCH 1/1] arm64: dts: qcom: msm8994: Reserve gpio ranges
Date: Mon, 5 Apr 2021 22:02:59 +0200 [thread overview]
Message-ID: <20210405200259.23525-1-petr.vorel@gmail.com> (raw)
Reserve pins 0-3 and 85-88 as these aren't meant to be accessible
from the application CPUs. Fix similar to 9134586715e3.
Fixes: 3edfb7bd76bd ("gpiolib: Show correct direction from the beginning")
Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
---
Hi,
tested on latest qcom/for-next.
Simple testing with /sys/class/gpio/export showed that 85-88.
3 disables UART. I expect 0-2 are also reserved as on other msm8998.
for i in $(seq 0 146); do echo $i > /sys/class/gpio/export; done
I expect it's just angler specific, thus I haven't added it to msm8994.dtsi
(otherwise Konrad would have fixed it).
Kind regards,
Petr
arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts b/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts
index baa55643b40f..0dc94101d5de 100644
--- a/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts
+++ b/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2015, Huawei Inc. All rights reserved.
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021 Petr Vorel <petr.vorel@gmail.com>
*/
/dts-v1/;
@@ -32,3 +33,7 @@ serial@f991e000 {
};
};
};
+
+&tlmm {
+ gpio-reserved-ranges = <0 4>, <85 4>;
+};
--
2.30.2
next reply other threads:[~2021-04-05 20:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-05 20:02 Petr Vorel [this message]
2021-04-05 20:09 ` [PATCH 1/1] arm64: dts: qcom: msm8994: Reserve gpio ranges Ricardo Ribalda Delgado
2021-04-05 20:15 ` Petr Vorel
2021-04-05 22:52 ` Bjorn Andersson
2021-04-06 4:38 ` Petr Vorel
2021-04-08 7:17 ` Linus Walleij
2021-04-08 19:02 ` Petr Vorel
2021-04-08 20:05 ` Konrad Dybcio
2021-04-08 21:40 ` Linus Walleij
2021-04-09 3:19 ` Petr Vorel
2021-04-09 3:37 ` Bjorn Andersson
2021-04-10 5:52 ` Petr Vorel
2021-04-10 9:16 ` Konrad Dybcio
2021-04-10 17:20 ` Petr Vorel
2021-04-12 17:48 ` Petr Vorel
2021-04-08 21:35 ` Linus Walleij
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