From e9d34fce0765cb2927abeb4bde2225c5aee2925c Mon Sep 17 00:00:00 2001 From: Patrick Yavitz Date: Wed, 28 Feb 2024 11:55:04 -0500 Subject: [PATCH] drivers: mmc: sunxi_mmc: bpi-m4-zero emmc boot support Signed-off-by: Patrick Yavitz --- drivers/mmc/sunxi_mmc.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index 714706d241..2d23932099 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -543,6 +543,10 @@ struct mmc *sunxi_mmc_init(int sdc_no) cfg->f_min = 400000; cfg->f_max = 52000000; + + if (sdc_no == 2) { + cfg->f_max = 8000000; + } if (mmc_resource_init(sdc_no) != 0) return NULL; @@ -640,20 +644,26 @@ static int sunxi_mmc_probe(struct udevice *dev) struct mmc_config *cfg = &plat->cfg; struct ofnode_phandle_args args; u32 *ccu_reg; - int ret; + int bus_width, ret; cfg->name = dev->name; + bus_width = dev_read_u32_default(dev, "bus-width", 1); cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34; + cfg->host_caps = 0; + if (bus_width == 8) + cfg->host_caps |= MMC_MODE_8BIT; + if (bus_width >= 4) + cfg->host_caps |= MMC_MODE_4BIT; cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS; cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; cfg->f_min = 400000; cfg->f_max = 52000000; - ret = mmc_of_parse(dev, cfg); - if (ret) - return ret; + if (bus_width == 8) { + cfg->f_max = 52000000; + } priv->reg = dev_read_addr_ptr(dev); -- 2.39.2