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>
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
diff --git a/arch/arm/mach-tegra/tegra20/Kconfig b/arch/arm/mach-tegra/tegra20/Kconfig
index 6367837..a79fdc2 100644
--- a/arch/arm/mach-tegra/tegra20/Kconfig
+++ b/arch/arm/mach-tegra/tegra20/Kconfig
@@ -17,6 +17,9 @@
config TEGRA_UARTA_SDIO1
bool
+config TEGRA_UARTA_SDB_SDD
+ bool
+
choice
prompt "Tegra20 board select"
optional