From 0f4e2054c971c827dc9463ff14c7f8f90972eb52 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Niklas=20S=C3=B6derlund?= Date: Wed, 28 Nov 2018 17:18:29 +0100 Subject: [PATCH] mmc: renesas_sdhi: disable HS400 on H3 ES1.x and M3-W ES1.[012] MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The Renesas BSP confirms that H3 ES1.x and M3-W ES1.[012] do not properly support HS400. Add a quirk to indicate this and disable HS400 in the MMC capabilities if the quirk is set. Signed-off-by: Niklas Söderlund Tested-by: Wolfram Sang Reviewed-by: Wolfram Sang Reviewed-by: Simon Horman Signed-off-by: Ulf Hansson --- drivers/mmc/host/renesas_sdhi_core.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 6abcf7a3feb0..a049b01206f1 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -47,6 +47,7 @@ #define SDHI_VER_GEN3_SDMMC 0xcd10 struct renesas_sdhi_quirks { + bool hs400_disabled; bool hs400_4taps; }; @@ -602,15 +603,21 @@ static void renesas_sdhi_enable_dma(struct tmio_mmc_host *host, bool enable) renesas_sdhi_sdbuf_width(host, enable ? width : 16); } -static const struct renesas_sdhi_quirks sdhi_quirks_4tap = { +static const struct renesas_sdhi_quirks sdhi_quirks_h3_m3w_es1 = { + .hs400_disabled = true, + .hs400_4taps = true, +}; + +static const struct renesas_sdhi_quirks sdhi_quirks_h3_es2 = { + .hs400_disabled = false, .hs400_4taps = true, }; static const struct soc_device_attribute sdhi_quirks_match[] = { - { .soc_id = "r8a7795", .revision = "ES1.*", .data = &sdhi_quirks_4tap }, - { .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_4tap }, - { .soc_id = "r8a7796", .revision = "ES1.0", .data = &sdhi_quirks_4tap }, - { .soc_id = "r8a7796", .revision = "ES1.1", .data = &sdhi_quirks_4tap }, + { .soc_id = "r8a7795", .revision = "ES1.*", .data = &sdhi_quirks_h3_m3w_es1 }, + { .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_h3_es2 }, + { .soc_id = "r8a7796", .revision = "ES1.0", .data = &sdhi_quirks_h3_m3w_es1 }, + { .soc_id = "r8a7796", .revision = "ES1.1", .data = &sdhi_quirks_h3_m3w_es1 }, { /* Sentinel. */ }, }; @@ -699,6 +706,9 @@ int renesas_sdhi_probe(struct platform_device *pdev, host->multi_io_quirk = renesas_sdhi_multi_io_quirk; host->dma_ops = dma_ops; + if (quirks && quirks->hs400_disabled) + host->mmc->caps2 &= ~(MMC_CAP2_HS400 | MMC_CAP2_HS400_ES); + if (quirks && quirks->hs400_4taps) mmc_data->flags |= TMIO_MMC_HAVE_4TAP_HS400; -- 2.30.2