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| author | Hung-Te Lin <hungte@chromium.org> | 2013-06-24 20:02:01 +0800 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-07-10 23:15:15 +0200 |
| commit | c357aed3d7954c87375ab5f7f6c0902a302adf09 (patch) | |
| tree | e5aaad0e0b95d497fe84cffdf7db5c2dea407002 | |
| parent | e42030d23600990e95db2af1e9e1a366ff3d4ec7 (diff) | |
armv7/pit: Setup EC on SPI2.
The Embedded Controller (EC) for Pit is connected via SPI2, and needs to be
configured before we can talk to it.
Change-Id: I1f8e921b4616f15951f3e5fae1ecbf116de4ba90
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3707
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
| -rw-r--r-- | src/mainboard/google/pit/romstage.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mainboard/google/pit/romstage.c b/src/mainboard/google/pit/romstage.c index 41b64b2893..7ba66a4a35 100644 --- a/src/mainboard/google/pit/romstage.c +++ b/src/mainboard/google/pit/romstage.c @@ -122,6 +122,14 @@ static void setup_storage(void) exynos_pinmux_sdmmc2(); } +static void setup_ec(void) +{ + /* SPI2 (EC) is slower and needs to work in half-duplex mode with + * single byte bus width. */ + clock_set_rate(PERIPH_ID_SPI2, 500000); + exynos_pinmux_spi2(); +} + static void setup_graphics(void) { exynos_pinmux_dphpd(); @@ -271,6 +279,7 @@ void main(void) setup_storage(); setup_gpio(); setup_graphics(); + setup_ec(); simple_spi_test(); /* Set SPI (primary CBFS media) clock to 50MHz. */ |