diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/cannonlake/fsp_params.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/fsp_params.c b/src/soc/intel/cannonlake/fsp_params.c index cc01d10fe8..dd9388296d 100644 --- a/src/soc/intel/cannonlake/fsp_params.c +++ b/src/soc/intel/cannonlake/fsp_params.c @@ -119,6 +119,28 @@ static void ignore_gbe_ltr(void) write8(pmcbase + LTR_IGN, reg8); } +static void configure_gspi_cs(int idx, const config_t *config, + uint8_t *polarity, uint8_t *enable, + uint8_t *defaultcs) +{ + struct spi_cfg cfg; + + /* If speed_mhz is set, infer that the port should be configured */ + if (config->common_soc_config.gspi[idx].speed_mhz != 0) { + if (gspi_get_soc_spi_cfg(idx, &cfg) == 0) { + if (cfg.cs_polarity == SPI_POLARITY_LOW) + *polarity = 0; + else + *polarity = 1; + + if (defaultcs != NULL) + *defaultcs = 0; + if (enable != NULL) + *enable = 1; + } + } +} + /* UPD parameters to be initialized before SiliconInit */ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) { @@ -357,6 +379,27 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) /* Unlock all GPIO pads */ tconfig->PchUnlockGpioPads = config->PchUnlockGpioPads; + + /* + * GSPI Chip Select parameters + * The GSPI driver assumes that CS0 is the used chip-select line, + * therefore only CS0 is configured below. + */ +#if CONFIG(SOC_INTEL_COMETLAKE) + configure_gspi_cs(0, config, ¶ms->SerialIoSpi0CsPolarity[0], + ¶ms->SerialIoSpi0CsEnable[0], + ¶ms->SerialIoSpiDefaultCsOutput[0]); + configure_gspi_cs(1, config, ¶ms->SerialIoSpi1CsPolarity[0], + ¶ms->SerialIoSpi1CsEnable[0], + ¶ms->SerialIoSpiDefaultCsOutput[1]); + configure_gspi_cs(2, config, ¶ms->SerialIoSpi2CsPolarity[0], + ¶ms->SerialIoSpi2CsEnable[0], + ¶ms->SerialIoSpiDefaultCsOutput[2]); +#else + for (i = 0; i < CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX; i++) + configure_gspi_cs(i, config, + ¶ms->SerialIoSpiCsPolarity[0], NULL, NULL); +#endif } /* Mainboard GPIO Configuration */ |