diff options
| author | Faiz Abbas | 2018-10-04 16:44:50 +0530 |
|---|---|---|
| committer | Ulf Hansson | 2018-10-09 08:59:26 +0200 |
| commit | f0061fed1f8a9f86ddec303a3f94742a71b20cb7 (patch) | |
| tree | 67d01428b84743ad2ea5c3c354f07019e07cb44d | |
| parent | 06b23ca021c425bb828a66b68704efe5febadb2a (diff) | |
mmc: sdhci-of-arasan: Add Support for AM654 MMC and PHY
The current arasan sdhci PHY configuration isn't compatible
with the PHY on TI's AM654 devices.
Therefore, add a new compatible, AM654 specific quirks
and a new AM654 specific set_clock function which
configures the PHY in a sane way.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-of-arasan.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index c9e3e050ccc8..142c4b802f31 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -231,6 +231,25 @@ static void sdhci_arasan_set_clock(struct sdhci_host *host, unsigned int clock) } } +static void sdhci_arasan_am654_set_clock(struct sdhci_host *host, + unsigned int clock) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_arasan_data *sdhci_arasan = sdhci_pltfm_priv(pltfm_host); + + if (sdhci_arasan->is_phy_on) { + phy_power_off(sdhci_arasan->phy); + sdhci_arasan->is_phy_on = false; + } + + sdhci_set_clock(host, clock); + + if (clock > PHY_CLK_TOO_SLOW_HZ) { + phy_power_on(sdhci_arasan->phy); + sdhci_arasan->is_phy_on = true; + } +} + static void sdhci_arasan_hs400_enhanced_strobe(struct mmc_host *mmc, struct mmc_ios *ios) { @@ -316,6 +335,29 @@ static struct sdhci_arasan_of_data sdhci_arasan_data = { .pdata = &sdhci_arasan_pdata, }; +static const struct sdhci_ops sdhci_arasan_am654_ops = { + .set_clock = sdhci_arasan_am654_set_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .get_timeout_clock = sdhci_pltfm_clk_get_max_clock, + .set_bus_width = sdhci_set_bus_width, + .reset = sdhci_arasan_reset, + .set_uhs_signaling = sdhci_set_uhs_signaling, +}; + +static const struct sdhci_pltfm_data sdhci_arasan_am654_pdata = { + .ops = &sdhci_arasan_am654_ops, + .quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN | + SDHCI_QUIRK_INVERTED_WRITE_PROTECT | + SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12, + .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN | + SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400, +}; + +static const struct sdhci_arasan_of_data sdhci_arasan_am654_data = { + .pdata = &sdhci_arasan_am654_pdata, +}; + static u32 sdhci_arasan_cqhci_irq(struct sdhci_host *host, u32 intmask) { int cmd_error = 0; @@ -478,6 +520,10 @@ static const struct of_device_id sdhci_arasan_of_match[] = { .compatible = "rockchip,rk3399-sdhci-5.1", .data = &sdhci_arasan_rk3399_data, }, + { + .compatible = "ti,am654-sdhci-5.1", + .data = &sdhci_arasan_am654_data, + }, /* Generic compatible below here */ { .compatible = "arasan,sdhci-8.9a", |