linux-kernel - [PATCH 4.4 71/77] mmc: sdhci-of-at91: add quirk for broken HS200

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Message-Id: <20190904175309.989130693@linuxfoundation.org>
Date:   Wed,  4 Sep 2019 19:53:58 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Eugen Hristev <eugen.hristev@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 4.4 71/77] mmc: sdhci-of-at91: add quirk for broken HS200

From: Eugen Hristev <eugen.hristev@...rochip.com>

commit 7871aa60ae0086fe4626abdf5ed13eeddf306c61 upstream.

HS200 is not implemented in the driver, but the controller claims it
through caps. Remove it via a quirk, to make sure the mmc core do not try
to enable HS200, as it causes the eMMC initialization to fail.

Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
Fixes: bb5f8ea4d514 ("mmc: sdhci-of-at91: introduce driver for the Atmel SDMMC")
Cc: stable@...r.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/sdhci-of-at91.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -144,6 +144,9 @@ static int sdhci_at91_probe(struct platf
 
 	sdhci_get_of_property(pdev);
 
+	/* HS200 is broken at this moment */
+	host->quirks2 = SDHCI_QUIRK2_BROKEN_HS200;
+
 	ret = sdhci_add_host(host);
 	if (ret)
 		goto clocks_disable_unprepare;