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Groups > linux.kernel > #1417044 > unrolled thread

[RFC PATCH 1/4] Documentation: mmc: add description for new caps

Started byShawn Lin <shawn.lin@rock-chips.com>
First post2016-06-08 10:30 +0200
Last post2016-06-08 22:50 +0200
Articles 2 — 2 participants

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  [RFC PATCH 1/4] Documentation: mmc: add description for new caps Shawn Lin <shawn.lin@rock-chips.com> - 2016-06-08 10:30 +0200
    Re: [RFC PATCH 1/4] Documentation: mmc: add description for new caps Rob Herring <robh@kernel.org> - 2016-06-08 22:50 +0200

#1417044 — [RFC PATCH 1/4] Documentation: mmc: add description for new caps

FromShawn Lin <shawn.lin@rock-chips.com>
Date2016-06-08 10:30 +0200
Subject[RFC PATCH 1/4] Documentation: mmc: add description for new caps
Message-ID<rHH2a-6b9-23@gated-at.bofh.it>
Let's add some basic description for cap-no-sdio,
cap-no-sd and cap-no-mmc.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>

---

 Documentation/devicetree/bindings/mmc/mmc.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index ecc007a..e16d42b 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -39,6 +39,9 @@ Optional properties:
 - cap-power-off-card: powering off the card is safe
 - cap-mmc-hw-reset: eMMC hardware reset is supported
 - cap-sdio-irq: enable SDIO IRQ signalling on this interface
+- cap-no-sdio: skip sending sdio cmd during initialization
+- cap-no-sd: skip sending sd cmd during initialization
+- cap-no-mmc: skip sending mmc cmd during initialization
 - full-pwr-cycle: full power cycle of the card is supported
 - mmc-ddr-1_8v: eMMC high-speed DDR mode(1.8V I/O) is supported
 - mmc-ddr-1_2v: eMMC high-speed DDR mode(1.2V I/O) is supported
-- 
2.3.7

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#1417859

FromRob Herring <robh@kernel.org>
Date2016-06-08 22:50 +0200
Message-ID<rHSAi-4ZD-23@gated-at.bofh.it>
In reply to#1417044
On Wed, Jun 08, 2016 at 04:20:21PM +0800, Shawn Lin wrote:
> Let's add some basic description for cap-no-sdio,
> cap-no-sd and cap-no-mmc.

This doesn't say why.

If you know what is there, then there's a better way to do this. Look at 
the child nodes because chances are if you have something soldered down 
like SDIO or eMMC, then you have a child node already for resets, 
regulators, etc.

Rob

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