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@xxxxxxxxx>
---
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@xxxxxxxxx>
*/
/dts-v1/;
@@ -32,3 +33,7 @@ serial@f991e000 {
};
};
};
+
+&tlmm {
+ gpio-reserved-ranges = <0 4>, <85 4>;
+};
--
2.30.2
