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mmc: msm_sdhci: program core_vendor_spec

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After resetting the host controller, program in the POR val for this
register just like the Linux driver does.

This seems to help with initialization when running U-Boot as the primary
bootloader on some boards.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
This commit is contained in:
Caleb Connolly
2024-06-21 03:53:09 +02:00
committed by Tom Rini
parent efddda8f03
commit e24c8cc658
1 changed files with 11 additions and 0 deletions
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11
drivers/mmc/msm_sdhci.c
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@@ -32,6 +32,8 @@
#define SDCC_MCI_STATUS2_MCI_ACT 0x1
#define SDCC_MCI_HC_MODE 0x78
#define CORE_VENDOR_SPEC_POR_VAL 0xa9c
struct msm_sdhc_plat {
struct mmc_config cfg;
struct mmc mmc;
@@ -46,6 +48,7 @@ struct msm_sdhc {
struct msm_sdhc_variant_info {
bool mci_removed;
u32 core_vendor_spec;
u32 core_vendor_spec_capabilities0;
};
@@ -54,11 +57,14 @@ DECLARE_GLOBAL_DATA_PTR;
static int msm_sdc_clk_init(struct udevice *dev)
{
struct msm_sdhc *prv = dev_get_priv(dev);
const struct msm_sdhc_variant_info *var_info;
ofnode node = dev_ofnode(dev);
ulong clk_rate;
int ret, i = 0, n_clks;
const char *clk_name;
var_info = (void *)dev_get_driver_data(dev);
ret = ofnode_read_u32(node, "clock-frequency", (uint *)(&clk_rate));
if (ret)
clk_rate = 201500000;
@@ -105,6 +111,9 @@ static int msm_sdc_clk_init(struct udevice *dev)
return -EINVAL;
}
writel_relaxed(CORE_VENDOR_SPEC_POR_VAL,
prv->host.ioaddr + var_info->core_vendor_spec);
return 0;
}
@@ -254,12 +263,14 @@ static int msm_sdc_bind(struct udevice *dev)
static const struct msm_sdhc_variant_info msm_sdhc_mci_var = {
.mci_removed = false,
.core_vendor_spec = 0x10c,
.core_vendor_spec_capabilities0 = 0x11c,
};
static const struct msm_sdhc_variant_info msm_sdhc_v5_var = {
.mci_removed = true,
.core_vendor_spec = 0x20c,
.core_vendor_spec_capabilities0 = 0x21c,
};