From: Scott Branden <sbranden@broadcom.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Chris Ball <chris@printf.net>
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Ray Jui <rjui@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com,
Scott Branden <sbranden@broadcom.com>
Subject: [PATCH] mmc: sdhci: add quirk for ACMD23 broken
Date: Thu, 4 Dec 2014 16:11:24 -0800 [thread overview]
Message-ID: <1417738284-10074-1-git-send-email-sbranden@broadcom.com> (raw)
In-Reply-To: <Scott Branden <sbranden@broadcom.com>
Add quick to handle broken auto-CMD23
Some controllers do not respond after the first auto-CMD23 is issued.
This allows CMD23 to still work (mandatory for the faster UHS-I mode)
rather than disabling CMD23 entirely via SDHCI_QUIRK2_HOST_NO_CMD23.
Signed-off by: Corneliu Doban <cdoban@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
---
drivers/mmc/host/sdhci.c | 3 ++-
include/linux/mmc/sdhci.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index ada1a3e..b37331f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2985,7 +2985,8 @@ int sdhci_add_host(struct sdhci_host *host)
/* Auto-CMD23 stuff only works in ADMA or PIO. */
if ((host->version >= SDHCI_SPEC_300) &&
((host->flags & SDHCI_USE_ADMA) ||
- !(host->flags & SDHCI_USE_SDMA))) {
+ !(host->flags & SDHCI_USE_SDMA)) &&
+ !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) {
host->flags |= SDHCI_AUTO_CMD23;
DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc));
} else {
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index dba793e..d979cf9 100644
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -100,6 +100,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7)
/* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */
#define SDHCI_QUIRK2_STOP_WITH_TC (1<<8)
+/* Controller broken with using ACMD23 */
+#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<9)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
--
2.2.0
next prev parent reply other threads:[~2014-12-05 0:11 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Scott Branden <sbranden@broadcom.com>
2014-10-15 2:01 ` [PATCH 0/1] sdhci-bcm2835: added quirk and removed udelay in write ops Scott Branden
2014-10-15 2:01 ` [PATCH 1/1] mmc: " Scott Branden
2014-10-17 2:50 ` Stephen Warren
2014-10-15 16:43 ` Scott Branden
2014-10-18 2:37 ` Stephen Warren
2014-10-18 6:40 ` Scott Branden
2014-10-30 6:36 ` [PATCHv2 0/5] " Scott Branden
2014-10-30 6:36 ` [PATCHv2 1/5] mmc: sdhci-bcm2835: group read and write functions to improve readability Scott Branden
2014-10-30 6:36 ` [PATCHv2 2/5] mmc: sdhci-bcm2835: make shift calculations consistent Scott Branden
2014-11-05 4:48 ` Stephen Warren
2014-11-05 5:19 ` Scott Branden
2014-10-30 6:36 ` [PATCHv2 3/5] mmc: shdci-bcm2835: add efficient back-to-back write workaround Scott Branden
2014-11-05 4:57 ` Stephen Warren
2014-11-05 6:55 ` Scott Branden
2014-11-06 4:48 ` Stephen Warren
2014-11-07 18:29 ` Scott Branden
2014-10-30 6:36 ` [PATCHv2 4/5] mmc: shdci-bcm2835: add verify for 32-bit back-to-back workaround Scott Branden
2014-11-05 4:44 ` Stephen Warren
2014-11-05 5:26 ` Scott Branden
2014-11-05 4:59 ` Stephen Warren
2014-11-05 7:00 ` Scott Branden
2014-11-06 5:01 ` Stephen Warren
2014-11-07 18:31 ` Scott Branden
2015-12-22 15:55 ` Stefan Wahren
2015-12-22 19:23 ` Scott Branden
2015-12-22 20:13 ` Stefan Wahren
2014-10-30 6:36 ` [PATCHv2 5/5] mmc: sdhci-bcm2835: add sdhci quirk SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 Scott Branden
2014-11-05 5:00 ` Stephen Warren
2014-11-05 7:02 ` Scott Branden
2014-11-06 4:50 ` Stephen Warren
2014-11-07 18:30 ` Scott Branden
2014-12-05 0:11 ` Scott Branden [this message]
2014-12-05 0:16 ` [PATCH v2] mmc: sdhci: add quirk for ACMD23 broken Scott Branden
2014-12-17 18:36 ` Scott Branden
2014-12-17 19:48 ` Chris Ball
2014-12-17 20:42 ` Scott Branden
2015-02-10 0:06 ` [PATCH 0/4] Add support for IPROC SDHCI controller Scott Branden
2015-02-10 0:06 ` [PATCH 1/4] mmc: sdhci: add quirk for ACMD23 broken Scott Branden
2015-02-10 0:06 ` [PATCH 2/4] mmc: sdhci: do not set AUTO_CMD12 for multi-block CMD53 Scott Branden
2015-02-10 0:06 ` [PATCH 3/4] mmc: sdhci-iproc: add IPROC SDHCI driver Scott Branden
2015-02-10 0:06 ` [PATCH 4/4] mmc: sdhci-iproc: add device tree bindings Scott Branden
2015-03-02 23:50 ` Florian Fainelli
2015-03-04 23:14 ` Scott Branden
[not found] ` <1423526791-29453-1-git-send-email-sbranden-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2015-02-26 17:28 ` [PATCH 0/4] Add support for IPROC SDHCI controller Scott Branden
2015-03-05 15:59 ` [PATCH RESEND " Scott Branden
2015-03-05 15:59 ` [PATCH 1/4] mmc: sdhci: add quirk for ACMD23 broken Scott Branden
2015-03-05 15:59 ` [PATCH 2/4] mmc: sdhci: do not set AUTO_CMD12 for multi-block CMD53 Scott Branden
2015-03-05 15:59 ` [PATCH 3/4] mmc: sdhci-iproc: add IPROC SDHCI driver Scott Branden
2015-03-05 15:59 ` [PATCH 4/4] mmc: sdhci-iproc: add device tree bindings Scott Branden
2015-03-05 16:16 ` [PATCH RESEND 0/4] Add support for IPROC SDHCI controller Ulf Hansson
2015-03-05 19:57 ` Florian Fainelli
2015-03-10 18:35 ` [PATCH] mmc: sdhci: fix card presence logic in sdhci_request function Scott Branden
2015-03-13 10:14 ` Ulf Hansson
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