[PATCH] pinctrl: qcom: ipq5018: add missing pwm3 function on gpio13

[Gilberto Conde <gilbertorconde@gmail.com>]

GPIO13 supports the PWM3 function at mux select value 4, but the
pingroup table leaves that slot empty and gpio13 is not listed in
pwm3_groups. Selecting pwm3 on gpio13 is therefore rejected by the
pinmux core:

  ipq5018-tlmm: invalid group "gpio13" for function "pwm3"

The GL.iNet GL-X2000 drives its fan from PWM3 on this pin, and the
vendor firmware muxes it with select value 4:

  gpio13 : out low  func4 8mA no pull

Add pwm3 to the fourth function slot of gpio13 and list gpio13 in
pwm3_groups. With this the pin muxes as expected:

  pin 13 (GPIO_13): device 1941010.pwm function pwm3 group gpio13

Fixes: 725d1c891658 ("pinctrl: qcom: Add IPQ5018 pinctrl driver")
Signed-off-by: Gilberto Conde <gilbertorconde@gmail.com>
---
 drivers/pinctrl/qcom/pinctrl-ipq5018.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-ipq5018.c b/drivers/pinctrl/qcom/pinctrl-ipq5018.c
index 03cfba9534f..84392fe258c 100644
--- a/drivers/pinctrl/qcom/pinctrl-ipq5018.c
+++ b/drivers/pinctrl/qcom/pinctrl-ipq5018.c
@@ -563,7 +563,7 @@ static const char * const qdss_cti_trig_out_b1_groups[] = {
 };
 
 static const char * const pwm3_groups[] = {
-	"gpio45",
+	"gpio45", "gpio13",
 };
 
 static const char * const qdss_cti_trig_in_b1_groups[] = {
@@ -689,7 +689,7 @@ static const struct msm_pingroup ipq5018_groups[] = {
 	PINGROUP(10, blsp0_spi, blsp1_uart0, led0, gcc_plltest, qdss_tracedata_a, _, _, _, _),
 	PINGROUP(11, blsp0_spi, blsp1_uart0, _, gcc_tlmm, qdss_tracedata_a, _, _, _, _),
 	PINGROUP(12, blsp0_spi, blsp0_i2c, blsp1_uart0, _, gcc_plltest, qdss_tracedata_a, _, _, _),
-	PINGROUP(13, blsp0_spi, blsp0_i2c, blsp1_uart0, _, qdss_tracedata_a, _, _, _, _),
+	PINGROUP(13, blsp0_spi, blsp0_i2c, blsp1_uart0, pwm3, qdss_tracedata_a, _, _, _, _),
 	PINGROUP(14, pcie0_clk, _, _, cri_trng0, qdss_tracedata_a, _, _, _, _),
 	PINGROUP(15, _, _, cri_trng1, qdss_tracedata_a, _, _, _, _, _),
 	PINGROUP(16, pcie0_wake, _, _, cri_trng, qdss_tracedata_a, _, _, _, _),
-- 
2.55.0