[PATCH 2/2] pinctrl: aspeed: Split TRST out of the AST2700 SoC1 JTAGM1 group

[Billy Tsai]

The JTAGM1 group includes the D12 ball carrying the TRST signal, but
TRST is optional for a JTAG master and the ball may be needed for other
functions on designs that do not wire it. With TRST embedded in the
group, such designs cannot use the JTAG master at all.

Move D12 into a new JTAGM1TRST group under the same JTAGM1 function so
TRST is muxed only when a board requests it. Boards that do use TRST
now need to select both the JTAGM1 and JTAGM1TRST groups.

Signed-off-by: Billy Tsai <billy_tsai at aspeedtech.com>
---
 drivers/pinctrl/aspeed/pinctrl-aspeed-g7-soc1.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed-g7-soc1.c b/drivers/pinctrl/aspeed/pinctrl-aspeed-g7-soc1.c
index 50027d69c342..f8b4066699ce 100644
--- a/drivers/pinctrl/aspeed/pinctrl-aspeed-g7-soc1.c
+++ b/drivers/pinctrl/aspeed/pinctrl-aspeed-g7-soc1.c
@@ -1018,7 +1018,8 @@ PIN_GROUP(I3C6, AA22, AB20);
 PIN_GROUP(I3C7, AF18, AE19);
 PIN_GROUP(I3C8, AD20, AC20);
 PIN_GROUP(I3C9, AA21, AB21);
-PIN_GROUP(JTAGM1, D12, F10, E11, F11, F13);
+PIN_GROUP(JTAGM1, F10, E11, F11, F13);
+PIN_GROUP(JTAGM1TRST, D12);
 PIN_GROUP(LPC0, AF26, AF25, B16, D14, B15, B14, C17, B13, E14, C15);
 PIN_GROUP(LPC1, C16, C14, C11, D9, F14, D10, C12, C13, AE16, AE17);
 PIN_GROUP(LTPI, U25, U26, Y26, AA24);
@@ -1263,6 +1264,7 @@ static const struct pingroup aspeed_g7_soc1_groups[] = {
 	GROUP(I3C8),
 	GROUP(I3C9),
 	GROUP(JTAGM1),
+	GROUP(JTAGM1TRST),
 	GROUP(LPC0),
 	GROUP(LPC1),
 	GROUP(LTPI),
@@ -1528,7 +1530,7 @@ static const struct aspeed_g7_soc1_function aspeed_g7_soc1_functions[] = {
 	FUNC(I3C7, (1), "I3C7"),
 	FUNC(I3C8, (1), "I3C8"),
 	FUNC(I3C9, (1), "I3C9"),
-	FUNC(JTAGM1, (1), "JTAGM1"),
+	FUNC(JTAGM1, (1, 1), "JTAGM1", "JTAGM1TRST"),
 	FUNC(LPC0, (2), "LPC0"),
 	FUNC(LPC1, (2), "LPC1"),
 	FUNC(LTPI, (2), "LTPI"),

-- 
2.34.1