From 620bb46eaddd8f8ee361b47e56d57fd50a29b005 Mon Sep 17 00:00:00 2001
From: Faiz Abbas <faiz_abbas@ti.com>
Date: Thu, 23 Jul 2020 09:42:19 +0530
Subject: [PATCH] mmc: sdhci: Enable high speed conditional on the
corresponding bit
The capabilities register has a field to indicate whether the host
supports high speed mode or not. Add high speed host_caps based on
this bit instead of enabling it by default.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Michal Simek <michal.simek@xilnx.com>
Tested-by: Michal Simek <michal.simek@xilnx.com>
(zcu104 with sdhci-caps-mask = <0 0x200000>;)
---
drivers/mmc/sdhci.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index ff871f8252..fe3d677bcf 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -843,7 +843,10 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host,
if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
cfg->voltages |= host->voltages;
- cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
+ if (caps & SDHCI_CAN_DO_HISPD)
+ cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz;
+
+ cfg->host_caps |= MMC_MODE_4BIT;
/* Since Host Controller Version3.0 */
if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
--
2.39.5