diff options
| author | Simon Glass <sjg@chromium.org> | 2012-01-11 12:42:25 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-02-12 10:11:22 +0100 |
| commit | cf06b139031670a8d06c88d5f3a31c284472f00e (patch) | |
| tree | 811d99cd350520257909bcff09c9ee4a3ff1271b /arch/arm | |
| parent | 8a1133c6074716d846b941fedfd6e0654e3f4292 (diff) | |
tegra: Add SDMMC support to funcmux
This adds support for SDMMC ports to the funcmux. Only one
option is supported: FUNCMUXO_SDMMC_8BIT which selects an 8-bit
wide SDIO interface where available.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/funcmux.c | 63 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-tegra2/funcmux.h | 8 |
2 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/funcmux.c b/arch/arm/cpu/armv7/tegra2/funcmux.c index 4fe6e06531..c1d2dfec5f 100644 --- a/arch/arm/cpu/armv7/tegra2/funcmux.c +++ b/arch/arm/cpu/armv7/tegra2/funcmux.c @@ -106,6 +106,69 @@ int funcmux_select(enum periph_id id, int config) } break; + case PERIPH_ID_SDMMC2: + if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) { + pinmux_set_func(PINGRP_DTA, PMUX_FUNC_SDIO2); + pinmux_set_func(PINGRP_DTD, PMUX_FUNC_SDIO2); + + pinmux_tristate_disable(PINGRP_DTA); + pinmux_tristate_disable(PINGRP_DTD); + } + break; + + case PERIPH_ID_SDMMC3: + switch (config) { + case FUNCMUX_SDMMC3_SDB_SLXA_8BIT: + pinmux_set_func(PINGRP_SLXA, PMUX_FUNC_SDIO3); + pinmux_set_func(PINGRP_SLXC, PMUX_FUNC_SDIO3); + pinmux_set_func(PINGRP_SLXD, PMUX_FUNC_SDIO3); + pinmux_set_func(PINGRP_SLXK, PMUX_FUNC_SDIO3); + + pinmux_tristate_disable(PINGRP_SLXA); + pinmux_tristate_disable(PINGRP_SLXC); + pinmux_tristate_disable(PINGRP_SLXD); + pinmux_tristate_disable(PINGRP_SLXK); + /* fall through */ + + case FUNCMUX_SDMMC3_SDB_4BIT: + pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3); + pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3); + pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3); + + pinmux_tristate_disable(PINGRP_SDB); + pinmux_tristate_disable(PINGRP_SDC); + pinmux_tristate_disable(PINGRP_SDD); + bad_config = 0; + break; + } + break; + + case PERIPH_ID_SDMMC4: + switch (config) { + case FUNCMUX_SDMMC4_ATC_ATD_8BIT: + pinmux_set_func(PINGRP_ATC, PMUX_FUNC_SDIO4); + pinmux_set_func(PINGRP_ATD, PMUX_FUNC_SDIO4); + + pinmux_tristate_disable(PINGRP_ATC); + pinmux_tristate_disable(PINGRP_ATD); + break; + + case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT: + pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4); + pinmux_tristate_disable(PINGRP_GME); + /* fall through */ + + case FUNCMUX_SDMMC4_ATB_GMA_4_BIT: + pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4); + pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4); + + pinmux_tristate_disable(PINGRP_ATB); + pinmux_tristate_disable(PINGRP_GMA); + bad_config = 0; + break; + } + break; + default: debug("%s: invalid periph_id %d", __func__, id); return -1; diff --git a/arch/arm/include/asm/arch-tegra2/funcmux.h b/arch/arm/include/asm/arch-tegra2/funcmux.h index d184523800..ae73c72ebe 100644 --- a/arch/arm/include/asm/arch-tegra2/funcmux.h +++ b/arch/arm/include/asm/arch-tegra2/funcmux.h @@ -39,6 +39,14 @@ enum { FUNCMUX_I2C2_DDC = 0, FUNCMUX_I2C2_PTA, FUNCMUX_I2C3_DTF = 0, + + /* SDMMC configs */ + FUNCMUX_SDMMC2_DTA_DTD_8BIT = 0, + FUNCMUX_SDMMC3_SDB_4BIT = 0, + FUNCMUX_SDMMC3_SDB_SLXA_8BIT, + FUNCMUX_SDMMC4_ATC_ATD_8BIT = 0, + FUNCMUX_SDMMC4_ATB_GMA_4_BIT, + FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT, }; /** |