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mmc: sdhci-brcmstb: clear CFG_OP_DLY when using HS200

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Clear SDIO_1_CFG_OP_DLY register when using HS200 mode to be
compliant with timing spec.  We only need this for on BCM72116
SoCs.

Signed-off-by: Kamal Dasu <kamal.dasu@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Kamal Dasu 2025-10-07 10:04:31 -04:00 committed by Ulf Hansson
parent 5ef9101006
commit 4d92506eb5
1 changed files with 30 additions and 0 deletions
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30
drivers/mmc/host/sdhci-brcmstb.c
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@ -34,6 +34,8 @@
#define SDIO_CFG_CTRL 0x0
#define SDIO_CFG_CTRL_SDCD_N_TEST_EN BIT(31)
#define SDIO_CFG_CTRL_SDCD_N_TEST_LEV BIT(30)
#define SDIO_CFG_OP_DLY 0x34
#define SDIO_CFG_OP_DLY_DEFAULT 0x80000003
#define SDIO_CFG_CQ_CAPABILITY 0x4c
#define SDIO_CFG_CQ_CAPABILITY_FMUL GENMASK(13, 12)
#define SDIO_CFG_MAX_50MHZ_MODE 0x1ac
@ -210,6 +212,21 @@ static void sdhci_brcmstb_cfginit_2712(struct sdhci_host *host)
}
}
static void sdhci_brcmstb_set_72116_uhs_signaling(struct sdhci_host *host, unsigned int timing)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_brcmstb_priv *priv = sdhci_pltfm_priv(pltfm_host);
u32 reg;
/* no change to SDIO_CFG_OP_DLY_DEFAULT when using preset clk rate */
if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN))
return;
reg = (timing == MMC_TIMING_MMC_HS200) ? 0 : SDIO_CFG_OP_DLY_DEFAULT;
writel(reg, priv->cfg_regs + SDIO_CFG_OP_DLY);
sdhci_set_uhs_signaling(host, timing);
}
static void sdhci_brcmstb_dumpregs(struct mmc_host *mmc)
{
sdhci_dumpregs(mmc_priv(mmc));
@ -250,6 +267,13 @@ static struct sdhci_ops sdhci_brcmstb_ops_2712 = {
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
static struct sdhci_ops sdhci_brcmstb_ops_72116 = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_brcmstb_set_72116_uhs_signaling,
};
static struct sdhci_ops sdhci_brcmstb_ops_7216 = {
.set_clock = sdhci_brcmstb_set_clock,
.set_bus_width = sdhci_set_bus_width,
@ -280,6 +304,11 @@ static struct brcmstb_match_priv match_priv_7445 = {
.ops = &sdhci_brcmstb_ops,
};
static struct brcmstb_match_priv match_priv_72116 = {
.flags = BRCMSTB_MATCH_FLAGS_BROKEN_TIMEOUT,
.ops = &sdhci_brcmstb_ops_72116,
};
static const struct brcmstb_match_priv match_priv_7216 = {
.flags = BRCMSTB_MATCH_FLAGS_HAS_CLOCK_GATE,
.hs400es = sdhci_brcmstb_hs400es,
@ -296,6 +325,7 @@ static const struct of_device_id __maybe_unused sdhci_brcm_of_match[] = {
{ .compatible = "brcm,bcm2712-sdhci", .data = &match_priv_2712 },
{ .compatible = "brcm,bcm7425-sdhci", .data = &match_priv_7425 },
{ .compatible = "brcm,bcm7445-sdhci", .data = &match_priv_7445 },
{ .compatible = "brcm,bcm72116-sdhci", .data = &match_priv_72116 },
{ .compatible = "brcm,bcm7216-sdhci", .data = &match_priv_7216 },
{ .compatible = "brcm,bcm74165b0-sdhci", .data = &match_priv_74165b0 },
{},