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| author | Tim Harvey <tharvey@gateworks.com> | 2016-05-24 11:03:59 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2016-05-31 17:26:27 +0200 |
| commit | 34b080b79ccb59e144619179b4cd57a2f146f8d3 (patch) | |
| tree | 0b889140d946e9f66d890d370ba30ee68556ccd2 /board/gateworks/gw_ventana/common.c | |
| parent | 385575bcb6013e8151fd98d80b8dc2b5bd732cfb (diff) | |
| download | u-boot-34b080b79ccb59e144619179b4cd57a2f146f8d3.zip u-boot-34b080b79ccb59e144619179b4cd57a2f146f8d3.tar.gz u-boot-34b080b79ccb59e144619179b4cd57a2f146f8d3.tar.bz2 | |
imx: ventana: add fdt fixup to enable UHS-I support on selected boards
UHS-I support is available on Ventana boards with micro-SD sockets depending
on the board revision. For backwards compatibility to not break users
who have old bootloaders and newer kernels the device-tree on boards with
microSD disables UHS-I support by default by defining the no-1-8-v property
in the esdhc controller node. For models/revisions that support switchable
1.8V/3.3V I/O which is detectable by the presence of a pull-down on the
SD3_VSELECT pin we remove that property to enable support in the kernel.
Additionally we add SD3_VSELECT to the pinmux for clarity (even though U-Boot
does not currently support UHS-I modes requiring 1.8V I/O).
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Diffstat (limited to 'board/gateworks/gw_ventana/common.c')
| -rw-r--r-- | board/gateworks/gw_ventana/common.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/board/gateworks/gw_ventana/common.c b/board/gateworks/gw_ventana/common.c index 2c3ac93..929dde9 100644 --- a/board/gateworks/gw_ventana/common.c +++ b/board/gateworks/gw_ventana/common.c @@ -134,6 +134,8 @@ void setup_ventana_i2c(void) static iomux_v3_cfg_t const gw_gpio_pads[] = { /* RS232_EN# */ IOMUX_PADS(PAD_SD4_DAT3__GPIO2_IO11 | DIO_PAD_CFG), + /* SD3_VSELECT */ + IOMUX_PADS(PAD_NANDF_CS1__GPIO6_IO14 | DIO_PAD_CFG), }; /* prototype */ @@ -766,6 +768,11 @@ void setup_iomux_gpio(int board, struct ventana_board_info *info) gpio_request(gpio_cfg[board].wdis, "wlan_dis"); gpio_direction_output(gpio_cfg[board].wdis, 1); } + + /* sense vselect pin to see if we support uhs-i */ + gpio_request(GP_SD3_VSELECT, "sd3_vselect"); + gpio_direction_input(GP_SD3_VSELECT); + gpio_cfg[board].usd_vsel = !gpio_get_value(GP_SD3_VSELECT); } /* setup GPIO pinmux and default configuration per baseboard and env */ |