From: jh80.chung@samsung•com (Jaehoon Chung)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 1/5] mmc: host: sdhci-s3c: Add broken-voltage DT property for broken voltage quirk
Date: Wed, 05 Sep 2012 17:36:52 +0900 [thread overview]
Message-ID: <50470F24.1010506@samsung.com> (raw)
In-Reply-To: <1346748609-11115-2-git-send-email-t.figa@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung•com>
On 09/04/2012 05:50 PM, Tomasz Figa wrote:
> Some boards use fixed voltage regulator for vmmc supply (e.g. for eMMC
> memories). MMC_CAP2_BROKEN_VOLTAGE must be enabled for them to operate
> correctly.
>
> Cc: Ben Dooks <ben-linux@fluff•org>
> Cc: Chris Ball <cjb@laptop•org>
> CC: linux-mmc at vger.kernel.org
> Signed-off-by: Tomasz Figa <t.figa@samsung•com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung•com>
> ---
> Documentation/devicetree/bindings/mmc/mmc.txt | 1 +
> drivers/mmc/host/sdhci-s3c.c | 3 +++
> 2 files changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
> index 8a6811f..ecbde68 100644
> --- a/Documentation/devicetree/bindings/mmc/mmc.txt
> +++ b/Documentation/devicetree/bindings/mmc/mmc.txt
> @@ -16,6 +16,7 @@ Optional properties:
> - wp-inverted: when present, polarity on the wp gpio line is inverted
> - non-removable: non-removable slot (like eMMC)
> - max-frequency: maximum operating clock frequency
> +- broken-voltage: vmmc regulator does not allow voltage control
>
> Example:
>
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index 445910e..39715b8 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -443,6 +443,9 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
> if (!ourhost->gpios)
> return -ENOMEM;
>
> + if (of_get_property(node, "broken-voltage", 0))
> + pdata->host_caps2 |= MMC_CAP2_BROKEN_VOLTAGE;
> +
> /* get the card detection method */
> if (of_get_property(node, "broken-cd", 0)) {
> pdata->cd_type = S3C_SDHCI_CD_NONE;
>
next prev parent reply other threads:[~2012-09-05 8:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-04 8:50 [PATCH v2 0/5] ARM: EXYNOS: Add support for Trats board using device tree Tomasz Figa
2012-09-04 8:50 ` [PATCH v2 1/5] mmc: host: sdhci-s3c: Add broken-voltage DT property for broken voltage quirk Tomasz Figa
2012-09-05 8:36 ` Jaehoon Chung [this message]
2012-09-19 5:42 ` Chris Ball
2012-09-19 10:13 ` Tomasz Figa
2012-09-19 10:24 ` Chris Ball
2012-09-19 10:34 ` Tomasz Figa
2012-09-19 10:47 ` Chris Ball
2012-09-19 10:49 ` Tomasz Figa
2012-09-19 11:02 ` Jaehoon Chung
2012-09-19 14:39 ` Chris Ball
2012-09-20 5:57 ` Jaehoon Chung
2012-09-04 8:50 ` [PATCH v2 2/5] ARM: Exynos4: dts: Specify address and size cells for i2c controllers Tomasz Figa
2012-09-05 3:58 ` Thomas Abraham
2012-09-08 2:37 ` Kukjin Kim
2012-09-04 8:50 ` [PATCH v2 3/5] ARM: Exynos4: Add OF compatibility lookups for Exynos4 i2c adapters Tomasz Figa
2012-09-05 3:59 ` Thomas Abraham
2012-09-08 2:38 ` Kukjin Kim
2012-09-04 8:50 ` [PATCH v2 4/5] ARM: EXYNOS: Increase maximum possible memory bank size to 512MiB Tomasz Figa
2012-09-08 2:41 ` Kukjin Kim
2012-09-08 8:15 ` Tomasz Figa
2012-09-04 8:50 ` [PATCH v2 5/5] ARM: Exynos: Add basic dts file for Samsung Trats board Tomasz Figa
2012-09-05 4:05 ` Thomas Abraham
2012-09-05 5:53 ` Tomasz Figa
2012-09-08 2:47 ` Kukjin Kim
2012-09-08 8:21 ` Tomasz Figa
2012-09-19 23:49 ` Kukjin Kim
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