From: Bjorn Andersson bjorn.andersson@linaro.org
[ Upstream commit 5f8d3ab136d0ccb59c4d628d8f85e0d8f2761d07 ]
With the introduction of commit 3edfb7bd76bd ("gpiolib: Show correct direction from the beginning") the gpiolib will attempt to read the direction of all pins, which triggers a read from protected register regions.
The pins 0 through 3 and 81 through 84 are protected, so mark these as reserved.
Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Reviewed-by: Stephen Boyd sboyd@kernel.org Reviewed-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Andy Gross andy.gross@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts index 6d651f314193..6921f8dc5ebb 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts +++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts @@ -31,6 +31,10 @@ status = "okay"; };
+&tlmm { + gpio-reserved-ranges = <0 4>, <81 4>; +}; + &uart9 { status = "okay"; };