From 83b27217158876f903fa9c91e326db00ecc57396 Mon Sep 17 00:00:00 2001 From: AngeloGioacchino Del Regno Date: Thu, 16 Dec 2021 13:57:46 +0100 Subject: mmc: mtk-sd: Take action for no-sdio device-tree parameter This driver was unconditionally enabling support for SDIO mode, but we do have a generic "no-sdio" DT parameter that sets caps2 MMC_CAP2_NO_SDIO. Modify the HW initialization sequence to enable SDIO support only if it hasn't been explicitly disabled in device-tree. Signed-off-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20211216125748.179602-3-angelogioacchino.delregno@collabora.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/mtk-sd.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'drivers/mmc/host/mtk-sd.c') diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index d067636434ca..f08695e52601 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1638,6 +1638,7 @@ static void msdc_init_hw(struct msdc_host *host) { u32 val; u32 tune_reg = host->dev_comp->pad_tune_reg; + struct mmc_host *mmc = mmc_from_priv(host); if (host->reset) { reset_control_assert(host->reset); @@ -1743,14 +1744,18 @@ static void msdc_init_hw(struct msdc_host *host) MSDC_PAD_TUNE_RXDLYSEL); } - /* Configure to enable SDIO mode. - * it's must otherwise sdio cmd5 failed - */ - sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); + if (mmc->caps2 & MMC_CAP2_NO_SDIO) { + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIO); + sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ); + sdr_clr_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + } else { + /* Configure to enable SDIO mode, otherwise SDIO CMD5 fails */ + sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); - /* Config SDIO device detect interrupt function */ - sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); - sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + /* Config SDIO device detect interrupt function */ + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + } /* Configure to default data timeout */ sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3); -- cgit