commit 420e9d8d068ca8bbe553e59e8f470b5b9e4b38bc
author Artur Kowalski <arturkow2000@gmail.com> Sun Mar 30 21:26:39 2025 +0200
committer Svyatoslav Ryhel <clamor95@gmail.com> Sat Apr 12 11:12:06 2025 +0300
tree 46f8dba8e1b31db4119174d8fd84531811a63252
parent 8178e89c5fbb9826806e8fa4b453c56e4f7118a0

ARM: tegra20: add funcmux for exposing UART over uSD slot on Tegra 20

UART-A can be exposed through uSD, this was tested on Transformer T20
but should work on all Ventana-based boards.

TX is exported on SDD pingroup corresponding to uSD CLK pin
RX is exported on SDB which is CMD pin in uSD slot

Signed-off-by: Artur Kowalski <arturkow2000@gmail.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

arch/arm/mach-tegra/board.c

diff --git a/arch/arm/mach-tegra/board.c b/arch/arm/mach-tegra/board.c
index 8c946f0..4835824 100644
--- a/arch/arm/mach-tegra/board.c
+++ b/arch/arm/mach-tegra/board.c
@@ -169,6 +169,8 @@
 	FUNCMUX_UART1_GPU,
  #elif defined(CONFIG_TEGRA_UARTA_SDIO1)
 	FUNCMUX_UART1_SDIO1,
+ #elif defined(CONFIG_TEGRA_UARTA_SDB_SDD)
+	FUNCMUX_UART1_SDB_SDD,
  #else
 	FUNCMUX_UART1_IRRX_IRTX,
 #endif