From: Suman Tripathi <stripathi@apm.com>
To: chris@printf.net, anton@enomsg.org, arnd@arndb.de,
michal.simek@xilinx.com
Cc: devicetree@vger.kernel.org, mlangsdo@redhat.com,
Suman Tripathi <stripathi@apm.com>,
jcm@redhat.com, linux-mmc@vger.kernel.org, patches@apm.com,
ddutile@redhat.com, linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH RESEND v6 2/2] mmc: sdhci: Add support to disable SDR104/SDR50/DDR50 based on capability register 0.
Date: Mon, 11 May 2015 14:08:51 +0530 [thread overview]
Message-ID: <1431333531-30491-3-git-send-email-stripathi@apm.com> (raw)
In-Reply-To: <1431333531-30491-1-git-send-email-stripathi@apm.com>
The sdhci framework disables SDR104/SDR50/DDR50 based on only quirk.
This patch adds the support to disable SDR104/SDR50/DDR50 based on
reading the capability register 0.
Signed-off-by: Suman Tripathi <stripathi@apm.com>
---
drivers/mmc/host/sdhci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c80287a..e024c64 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3199,7 +3199,8 @@ int sdhci_add_host(struct sdhci_host *host)
}
}
- if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V)
+ if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V ||
+ !(caps[0] & SDHCI_CAN_VDD_180))
caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
SDHCI_SUPPORT_DDR50);
--
1.8.2.1
prev parent reply other threads:[~2015-05-11 8:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-11 8:38 [PATCH RESEND v6 0/2] Add SDHCI support for APM X-Gene SoC using ARASAN SDHCI controller Suman Tripathi
2015-05-11 8:38 ` [PATCH RESEND v6 1/2] arm64: dts: Add the arasan sdhci nodes in apm-storm.dtsi Suman Tripathi
2015-05-12 5:33 ` Suman Tripathi
2015-05-12 7:28 ` Arnd Bergmann
2015-05-12 12:30 ` Ulf Hansson
2015-05-11 8:38 ` Suman Tripathi [this message]
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