Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f0061fed authored by Faiz Abbas's avatar Faiz Abbas Committed by Ulf Hansson
Browse files

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: default avatarFaiz Abbas <faiz_abbas@ti.com>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 06b23ca0

drivers/mmc/host/sdhci-of-arasan.c

+46 −0
Original line number Diff line number Diff line
@@ -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",