variant.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <baseboard/variants.h>
#include <device/device.h>
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/i2c_tunnel/chip.h>
 
#define DALBOZ_DB_HDMI 0x1
 
/*
 * This is to allow support for audio on older board versions (< 2). [b/153458561]. This
 * should be removed once these boards are phased out.
 */
static void update_audio_configuration(void)
{
        uint32_t board_version;
        const struct device *i2c_tunnel_dev = DEV_PTR(audio_rt5682);
        struct ec_google_chromeec_i2c_tunnel_config *cfg;
 
        /* If CBI board version cannot be read, assume this is an older revision of hardware. */
        if (google_chromeec_cbi_get_board_version(&board_version) != 0)
                board_version = 1;
 
        if (board_version >= 2)
                return;
 
        cfg = config_of(i2c_tunnel_dev);
        cfg->remote_bus = 5;
}
 
void variant_devtree_update(void)
{
        uint32_t board_version;
        struct soc_amd_picasso_config *cfg;
 
        cfg = config_of_soc();
 
        /*
         * If CBI board version cannot be read, assume this is an older revision
         * of hardware.
         */
        if (google_chromeec_cbi_get_board_version(&board_version) != 0)
                board_version = 1;
 
        if (variant_has_emmc() || boot_is_factory_unprovisioned()) {
                if (board_version <= 2) {
                        /*
                         * rev0 and rev1 boards have issues with HS400
                         *
                         * There is a tuning fix with ES which shows promise
                         * for some boards, and a HW fix with stitching vias.
                         * There were also concerns that these boards did not
                         * have good margins for certain skus.
                         *
                         * But these original boards have none of these fixes.
                         * So we keep the speed low here, with the intent that
                         * other variants implement these corrections.
                         */
                        cfg->emmc_config.timing = SD_EMMC_EMMC_HS200;
                }
        } else {
                cfg->emmc_config.timing = SD_EMMC_DISABLE;
        }
 
        update_audio_configuration();
}
 
/* FIXME: Comments seem to suggest these are not entirely correct. */
static const fsp_ddi_descriptor non_hdmi_ddi_descriptors[] = {
        {
                // DDI0, DP0, eDP
                .connector_type = EDP,
                .aux_index = AUX1,
                .hdp_index = HDP1
        },
        {
                // DDI1, DP1, DB OPT2 USB-C1 / DB OPT3 MST hub
                .connector_type = DP,
                .aux_index = AUX2,
                .hdp_index = HDP2
        },
        {
                // DP2 pins not connected on Dali
                // DDI2, DP3, USB-C0
                .connector_type = DP,
                .aux_index = AUX4,
                .hdp_index = HDP4,
        }
};
 
static const fsp_ddi_descriptor hdmi_ddi_descriptors[] = {
        { // DDI0, DP0, eDP
                .connector_type = EDP,
                .aux_index = AUX1,
                .hdp_index = HDP1
        },
        { // DDI1, DP1, DB OPT2 USB-C1 / DB OPT3 MST hub
                .connector_type = HDMI,
                .aux_index = AUX2,
                .hdp_index = HDP2
        },
        // DP2 pins not connected on Dali
        { // DDI2, DP3, USB-C0
                .connector_type = DP,
                .aux_index = AUX4,
                .hdp_index = HDP4,
        }
};
 
void variant_get_dxio_ddi_descriptors(const fsp_dxio_descriptor **dxio_descs,
                                      size_t *dxio_num,
                                      const fsp_ddi_descriptor **ddi_descs,
                                      size_t *ddi_num)
{
        uint32_t daughterboard_id = variant_get_daughterboard_id();
 
        *dxio_descs = baseboard_get_dxio_descriptors(dxio_num);
 
        /*
         * Get daughterboard id from FW_CONFIG and configure descriptors accordingly.
         * For unprovisioned boards use DB_HDMI as default.
         */
        if ((daughterboard_id == DALBOZ_DB_HDMI) || boot_is_factory_unprovisioned()) {
                *ddi_descs = &hdmi_ddi_descriptors[0];
                *ddi_num = ARRAY_SIZE(hdmi_ddi_descriptors);
        } else {
                *ddi_descs = &non_hdmi_ddi_descriptors[0];
                *ddi_num = ARRAY_SIZE(non_hdmi_ddi_descriptors);
        }
}