Commit 85c0da17 authored by Aapo Vienamo's avatar Aapo Vienamo Committed by Ulf Hansson
Browse files

mmc: tegra: Parse default trim and tap from dt 



Parse the default inbound and outbound sampling trimmer values from
the device tree.

Signed-off-by: default avatarAapo Vienamo <avienamo@nvidia.com>
Acked-by: default avatarThierry Reding <treding@nvidia.com>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent d4501d8e

drivers/mmc/host/sdhci-tegra.c

+22 −0
Original line number Diff line number Diff line
@@ -107,6 +107,9 @@ struct sdhci_tegra { 
	struct pinctrl_state *pinctrl_state_1v8;



	struct sdhci_tegra_autocal_offsets autocal_offsets;



	u32 default_tap;

	u32 default_trim;

};



static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
@@ -461,6 +464,23 @@ static void tegra_sdhci_parse_pad_autocal_dt(struct sdhci_host *host) 
		autocal->pull_down_hs400 = autocal->pull_down_1v8;

}



static void tegra_sdhci_parse_default_tap_and_trim(struct sdhci_host *host)

{

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);

	int err;



	err = device_property_read_u32(host->mmc->parent, "nvidia,default-tap",

				       &tegra_host->default_tap);

	if (err)

		tegra_host->default_tap = 0;



	err = device_property_read_u32(host->mmc->parent, "nvidia,default-trim",

				       &tegra_host->default_trim);

	if (err)

		tegra_host->default_trim = 0;

}



static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)

{

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -881,6 +901,8 @@ static int sdhci_tegra_probe(struct platform_device *pdev) 


	tegra_sdhci_parse_pad_autocal_dt(host);



	tegra_sdhci_parse_default_tap_and_trim(host);



	tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power",

							 GPIOD_OUT_HIGH);

	if (IS_ERR(tegra_host->power_gpio)) {

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