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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 /README | |
| parent | 385575bcb6013e8151fd98d80b8dc2b5bd732cfb (diff) | |
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 'README')
0 files changed, 0 insertions, 0 deletions