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| author | Furquan Shaikh <furquan@google.com> | 2020-04-28 21:57:07 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2020-04-30 21:00:23 +0000 |
| commit | 0eabe139e55e94bbd7c49f81248dd7eabdcf2a4b (patch) | |
| tree | 93a450024e38572b919ec1a282bed94cdf6aa372 /src/soc | |
| parent | 69c2811acc685f1d46aff081583af039388f7aab (diff) | |
| download | coreboot-0eabe139e55e94bbd7c49f81248dd7eabdcf2a4b.tar.xz | |
soc/amd/picasso: Add support for em100
This change enables support for em100 for Picasso platform. Since
em100 requires lower SPI speed, this change configures speed in all
modes as 16MHz.
BUG=b:147758054,b:153675510
BRANCH=trembyle-bringup
TEST=Verified that em100 works fine on trembyle.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ib5ea1fe094fda9b8dba63e94b37e61791629564f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40825
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/amd/picasso/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/amd/picasso/southbridge.c | 16 |
2 files changed, 16 insertions, 1 deletions
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig index fa053f98cc..5996cc632e 100644 --- a/src/soc/amd/picasso/Kconfig +++ b/src/soc/amd/picasso/Kconfig @@ -21,6 +21,7 @@ config CPU_SPECIFIC_OPTIONS select DRIVERS_I2C_DESIGNWARE select GENERIC_GPIO_LIB select IOAPIC + select HAVE_EM100_SUPPORT select HAVE_USBDEBUG_OPTIONS select TSC_MONOTONIC_TIMER select SOC_AMD_COMMON_BLOCK_SPI diff --git a/src/soc/amd/picasso/southbridge.c b/src/soc/amd/picasso/southbridge.c index 4f25802141..d37f143313 100644 --- a/src/soc/amd/picasso/southbridge.c +++ b/src/soc/amd/picasso/southbridge.c @@ -236,7 +236,7 @@ void sb_read_mode(u32 mode) write32((void *)(base + SPI_CNTRL0), val | SPI_READ_MODE(mode)); } -static void sb_spi_config_modes(void) +static void sb_spi_config_mb_modes(void) { const struct soc_amd_picasso_config *cfg = config_of_soc(); @@ -245,6 +245,20 @@ static void sb_spi_config_modes(void) cfg->spi_tpm_speed); } +static void sb_spi_config_em100_modes(void) +{ + sb_read_mode(SPI_READ_MODE_NORMAL33M); + sb_set_spi100(SPI_SPEED_16M, SPI_SPEED_16M, SPI_SPEED_16M, SPI_SPEED_16M); +} + +static void sb_spi_config_modes(void) +{ + if (CONFIG(EM100)) + sb_spi_config_em100_modes(); + else + sb_spi_config_mb_modes(); +} + static void sb_spi_init(void) { lpc_enable_spi_prefetch(); |