From: Ludovic Barre <ludovic.barre@st.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Rob Herring <robh+dt@kernel.org>
Cc: <srinivas.kandagatla@linaro.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-mmc@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
Ludovic Barre <ludovic.barre@st.com>
Subject: [PATCH V2 5/9] dt-bindings: mmc: mmci: add delay block base register for sdmmc
Date: Tue, 28 Jan 2020 10:06:32 +0100 [thread overview]
Message-ID: <20200128090636.13689-6-ludovic.barre@st.com> (raw)
In-Reply-To: <20200128090636.13689-1-ludovic.barre@st.com>
To support the sdr104 mode, the sdmmc variant has a
hardware delay block to manage the clock phase when sampling
data received by the card.
This patch adds a second base register (optional) for
sdmmc delay block.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
Documentation/devicetree/bindings/mmc/mmci.txt | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt
index 6d3c626e017d..4ec921e4bf34 100644
--- a/Documentation/devicetree/bindings/mmc/mmci.txt
+++ b/Documentation/devicetree/bindings/mmc/mmci.txt
@@ -28,6 +28,8 @@ specific for ux500 variant:
- st,sig-pin-fbclk : feedback clock signal pin used.
specific for sdmmc variant:
+- reg : a second base register may be defined if a delay
+ block is present and used for tuning.
- st,sig-dir : signal direction polarity used for cmd, dat0 dat123.
- st,neg-edge : data & command phase relation, generated on
sd clock falling edge.
--
2.17.1
next prev parent reply other threads:[~2020-01-28 9:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 9:06 [PATCH V2 0/9] mmc: mmci: sdmmc: add sdr104 support Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 1/9] mmc: mmci: sdmmc: replace sg_dma_xxx macros Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 2/9] mmc: mmci: sdmmc: rename sdmmc_priv struct to sdmmc_idma Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 3/9] mmc: mmci: add a reference at mmc_host_ops in mmci struct Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 4/9] mmc: mmci: add private pointer for variant Ludovic Barre
2020-01-28 9:06 ` Ludovic Barre [this message]
2020-02-05 17:49 ` [PATCH V2 5/9] dt-bindings: mmc: mmci: add delay block base register for sdmmc Rob Herring
2020-01-28 9:06 ` [PATCH V2 6/9] mmc: mmci: sdmmc: add execute tuning with delay block Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 7/9] mmc: mmci: add volt_switch callbacks Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 8/9] mmc: mmci: sdmmc: add voltage switch functions Ludovic Barre
2020-01-28 9:06 ` [PATCH V2 9/9] mmc: mmci: add sdmmc variant revision 2.0 Ludovic Barre
2020-02-11 14:44 ` Ludovic BARRE
2020-02-19 10:28 ` Ulf Hansson
2020-02-11 14:47 ` [PATCH V2 0/9] mmc: mmci: sdmmc: add sdr104 support Ludovic BARRE
2020-02-11 15:16 ` Ulf Hansson
2020-02-19 10:28 ` Ulf Hansson
2020-02-24 16:20 ` Ludovic BARRE
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