diff options
| author | Artur Kowalski <arturkow2000@gmail.com> | 2025-03-30 21:26:39 +0200 |
|---|---|---|
| committer | Svyatoslav Ryhel <clamor95@gmail.com> | 2025-04-12 11:12:06 +0300 |
| commit | 427dd4dd27eef00306a94800d66a6b82e2b11ad8 (patch) | |
| tree | 46f8dba8e1b31db4119174d8fd84531811a63252 /arch | |
| parent | b12931d7dedd4130b2e795525431b60ffac6541f (diff) | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-tegra20/funcmux.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/board.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra20/Kconfig | 3 |
3 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra20/funcmux.h b/arch/arm/include/asm/arch-tegra20/funcmux.h index e9e96c1f933..bafcf857620 100644 --- a/arch/arm/include/asm/arch-tegra20/funcmux.h +++ b/arch/arm/include/asm/arch-tegra20/funcmux.h @@ -19,6 +19,7 @@ enum { FUNCMUX_UART1_UAA_UAB, FUNCMUX_UART1_GPU, FUNCMUX_UART1_SDIO1, + FUNCMUX_UART1_SDB_SDD, FUNCMUX_UART2_UAD = 0, FUNCMUX_UART4_GMC = 0, diff --git a/arch/arm/mach-tegra/board.c b/arch/arm/mach-tegra/board.c index 8c946f0f117..4835824f724 100644 --- a/arch/arm/mach-tegra/board.c +++ b/arch/arm/mach-tegra/board.c @@ -169,6 +169,8 @@ static int uart_configs[] = { 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 63678376840..a79fdc25650 100644 --- a/arch/arm/mach-tegra/tegra20/Kconfig +++ b/arch/arm/mach-tegra/tegra20/Kconfig @@ -17,6 +17,9 @@ config TEGRA_UARTA_GPU config TEGRA_UARTA_SDIO1 bool +config TEGRA_UARTA_SDB_SDD + bool + choice prompt "Tegra20 board select" optional |