The TLMM gpio74 is also used to communicate with the secure NFC
on-board module, some variants of the SM8650-MTP board requires
this GPIO to be dedicated to the secure firmware and set reserved
in order to successfully initialize the TLMM GPIOs from HLOS (Linux).
On the other boards this GPIO is unused so it's still safe to mark
the GPIO as reserved.
Fixes: 6fbdb3c1fac7 ("arm64: dts: qcom: sm8650: add initial SM8650 MTP dts")
Reported-by: Georgi Djakov <djakov@xxxxxxxxxx>
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sm8650-mtp.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
index 9d916edb1c73..be133a3d5cbe 100644
--- a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
@@ -622,7 +622,7 @@ right_spkr: speaker@0,1 {
&tlmm {
/* Reserved I/Os for NFC */
- gpio-reserved-ranges = <32 8>;
+ gpio-reserved-ranges = <32 8>, <74 1>;
disp0_reset_n_active: disp0-reset-n-active-state {
pins = "gpio133";
--
2.34.1
