From 5c4f00627c9a881bacfd55ae9f2cd01ff33d4a9a Mon Sep 17 00:00:00 2001 From: Chester Lin Date: Thu, 21 Oct 2021 15:13:32 +0800 Subject: [PATCH] mmc: sdhci-esdhc-imx: add NXP S32G2 support Support the SDHCI controller found on NXP S32G2 platform. The new flag ESDHC_FLAG_SKIP_ERR004536 is used because the hardware erratum bit is not applicable for S32G2. Signed-off-by: Chester Lin Link: https://lore.kernel.org/r/20211021071333.32485-3-clin@suse.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-esdhc-imx.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index e658f0174242..afaf33707d46 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -196,6 +196,9 @@ */ #define ESDHC_FLAG_BROKEN_AUTO_CMD23 BIT(16) +/* ERR004536 is not applicable for the IP */ +#define ESDHC_FLAG_SKIP_ERR004536 BIT(17) + enum wp_types { ESDHC_WP_NONE, /* no WP, neither controller nor gpio */ ESDHC_WP_CONTROLLER, /* mmc controller internal WP */ @@ -289,6 +292,13 @@ static const struct esdhc_soc_data usdhc_imx7d_data = { | ESDHC_FLAG_BROKEN_AUTO_CMD23, }; +static struct esdhc_soc_data usdhc_s32g2_data = { + .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_MAN_TUNING + | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200 + | ESDHC_FLAG_HS400 | ESDHC_FLAG_HS400_ES + | ESDHC_FLAG_SKIP_ERR004536, +}; + static struct esdhc_soc_data usdhc_imx7ulp_data = { .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200 @@ -347,6 +357,7 @@ static const struct of_device_id imx_esdhc_dt_ids[] = { { .compatible = "fsl,imx7ulp-usdhc", .data = &usdhc_imx7ulp_data, }, { .compatible = "fsl,imx8qxp-usdhc", .data = &usdhc_imx8qxp_data, }, { .compatible = "fsl,imx8mm-usdhc", .data = &usdhc_imx8mm_data, }, + { .compatible = "nxp,s32g2-usdhc", .data = &usdhc_s32g2_data, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, imx_esdhc_dt_ids); @@ -1375,8 +1386,10 @@ static void sdhci_esdhc_imx_hwinit(struct sdhci_host *host) * erratum ESDHC_FLAG_ERR004536 fix for MX6Q TO1.2 and MX6DL * TO1.1, it's harmless for MX6SL */ - writel(readl(host->ioaddr + 0x6c) & ~BIT(7), - host->ioaddr + 0x6c); + if (!(imx_data->socdata->flags & ESDHC_FLAG_SKIP_ERR004536)) { + writel(readl(host->ioaddr + 0x6c) & ~BIT(7), + host->ioaddr + 0x6c); + } /* disable DLL_CTRL delay line settings */ writel(0x0, host->ioaddr + ESDHC_DLL_CTRL);