From: Ludovic Barre <ludovic.Barre@st.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Rob Herring <robh+dt@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
<benjamin.gaignard@linaro.org>,
Gerald Baeza <gerald.baeza@st.com>,
Loic Pallardy <loic.pallardy@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 26/27] mmc: mmci: add DT bindings for STM32 sdmmc
Date: Fri, 21 Sep 2018 11:46:20 +0200 [thread overview]
Message-ID: <1537523181-14578-27-git-send-email-ludovic.Barre@st.com> (raw)
In-Reply-To: <1537523181-14578-1-git-send-email-ludovic.Barre@st.com>
From: Ludovic Barre <ludovic.barre@st.com>
STM32 sdmmc variant has support to:
-Indicate signal directions (only one property
for d0dir, d123dir, cmd_dir)
-Select command and data phase relation.
-Select "clock in" from an external driver.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
change v3:
-remove space at end of "st,use-ckin "
Documentation/devicetree/bindings/mmc/mmci.txt | 9 +++++++++
drivers/mmc/host/mmci.c | 6 ++++++
drivers/mmc/host/mmci.h | 1 +
3 files changed, 16 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt
index e952707..d678933 100644
--- a/Documentation/devicetree/bindings/mmc/mmci.txt
+++ b/Documentation/devicetree/bindings/mmc/mmci.txt
@@ -19,6 +19,7 @@ Optional properties:
the ID provided by the HW
- vqmmc-supply : phandle to the regulator device tree node, mentioned
as the VCCQ/VDD_IO supply in the eMMC/SD specs.
+specific for ux500 variant:
- st,sig-dir-dat0 : bus signal direction pin used for DAT[0].
- st,sig-dir-dat2 : bus signal direction pin used for DAT[2].
- st,sig-dir-dat31 : bus signal direction pin used for DAT[3] and DAT[1].
@@ -26,6 +27,14 @@ Optional properties:
- st,sig-dir-cmd : cmd signal direction pin used for CMD.
- st,sig-pin-fbclk : feedback clock signal pin used.
+specific for sdmmc variant:
+- st,sig-dir : signal direction polarity used for cmd, dat0 dat123.
+- st,neg-edge : data & command phase relation, generated on
+ sd clock falling edge.
+- st,use-ckin : use ckin pin from an external driver to sample
+ the receive data (example: with voltage
+ switch transceiver).
+
Deprecated properties:
- mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable.
- mmc-cap-sd-highspeed : indicates whether SD is high speed capable.
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index d622fbb..4057456 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1708,6 +1708,12 @@ static int mmci_of_parse(struct device_node *np, struct mmc_host *mmc)
host->pwr_reg_add |= MCI_ST_CMDDIREN;
if (of_get_property(np, "st,sig-pin-fbclk", NULL))
host->pwr_reg_add |= MCI_ST_FBCLKEN;
+ if (of_get_property(np, "st,sig-dir", NULL))
+ host->pwr_reg_add |= MCI_STM32_DIRPOL;
+ if (of_get_property(np, "st,neg-edge", NULL))
+ host->clk_reg_add |= MCI_STM32_CLK_NEGEDGE;
+ if (of_get_property(np, "st,use-ckin", NULL))
+ host->clk_reg_add |= MCI_STM32_CLK_SELCKIN;
if (of_get_property(np, "mmc-cap-mmc-highspeed", NULL))
mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 75b9c5c..017d9b8 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -389,6 +389,7 @@ struct mmci_host {
u32 pwr_reg;
u32 pwr_reg_add;
u32 clk_reg;
+ u32 clk_reg_add;
u32 datactrl_reg;
u32 busy_status;
u32 mask1_reg;
--
2.7.4
next prev parent reply other threads:[~2018-09-21 9:47 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 9:45 [PATCH V2 00/27] mmc: mmci: add sdmmc variant for stm32 Ludovic Barre
2018-09-21 9:45 ` [PATCH V2 01/27] mmc: mmci: internalize dma map/unmap into mmci dma functions Ludovic Barre
2018-09-26 23:49 ` Ulf Hansson
2018-09-21 9:45 ` [PATCH V2 02/27] mmc: mmci: internalize dma_inprogress " Ludovic Barre
2018-09-26 23:49 ` Ulf Hansson
2018-09-21 9:45 ` [PATCH V2 03/27] mmc: mmci: convert dma_setup callback to return an int Ludovic Barre
2018-09-24 14:28 ` Ulf Hansson
2018-09-24 16:12 ` Ludovic BARRE
2018-09-26 23:49 ` Ulf Hansson
2018-09-27 8:55 ` Srinivas Kandagatla
2018-09-21 9:45 ` [PATCH V2 04/27] mmc: mmci: introduce dma_priv pointer to mmci_host Ludovic Barre
2018-09-24 18:52 ` Ulf Hansson
2018-09-25 7:19 ` Ludovic BARRE
2018-09-21 9:45 ` [PATCH V2 05/27] mmc: mmci: move mmci next cookie to mci host Ludovic Barre
2018-09-24 18:46 ` Ulf Hansson
2018-09-25 7:08 ` Ludovic BARRE
2018-09-21 9:46 ` [PATCH V2 06/27] mmc: mmci: merge prepare data functions Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 07/27] mmc: mmci: add prepare/unprepare_data callbacks Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 08/27] mmc: mmci: add get_next_data callback Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 09/27] mmc: mmci: modify dma_setup callback Ludovic Barre
2018-10-01 9:30 ` Ulf Hansson
2018-10-01 9:43 ` Ludovic BARRE
2018-09-21 9:46 ` [PATCH V2 10/27] mmc: mmci: add dma_release callback Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 11/27] mmc: mmci: add dma_start callback Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 12/27] mmc: mmci: add dma_finalize callback Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 13/27] mmc: mmci: add dma_error callback Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 14/27] mmc: mmci: add validate_data callback Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 15/27] mmc: mmci: add set_clk/pwrreg callbacks Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 16/27] mmc: mmci: add datactrl block size variant property Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 17/27] mmc: mmci: expand startbiterr to irqmask and error check Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 18/27] mmc: mmci: add variant properties to define cpsm & cmdresp bits Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 19/27] mmc: mmci: add variant property to define dpsm bit Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 20/27] mmc: mmci: add variant property to define irq pio mask Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 21/27] mmc: mmci: add variant property to write datactrl before command Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 22/27] mmc: mmci: add variant property to not read datacnt Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 23/27] mmc: mmci: add variant property to request a reset Ludovic Barre
2018-10-01 9:30 ` Ulf Hansson
2018-10-01 12:16 ` Ludovic BARRE
2018-10-01 13:43 ` Ulf Hansson
2018-09-21 9:46 ` [PATCH V2 24/27] mmc: mmci: add clock divider for stm32 sdmmc Ludovic Barre
2018-09-21 9:46 ` [PATCH V2 25/27] mmc: mmci: add stm32 sdmmc registers Ludovic Barre
2018-09-21 9:46 ` Ludovic Barre [this message]
2018-09-25 15:27 ` [PATCH V2 26/27] mmc: mmci: add DT bindings for STM32 sdmmc Rob Herring
2018-10-01 9:30 ` Ulf Hansson
2018-09-21 9:46 ` [PATCH V2 27/27] mmc: mmci: add stm32 sdmmc variant Ludovic Barre
2018-10-01 9:31 ` Ulf Hansson
2018-10-01 12:56 ` Ludovic BARRE
2018-10-01 13:39 ` Ulf Hansson
2018-10-01 13:53 ` Ludovic BARRE
-- strict thread matches above, loose matches on Subject: below --
2018-09-18 10:55 [PATCH V2 00/27] mmc: mmci: add sdmmc variant for stm32 Ludovic Barre
2018-09-18 10:55 ` [PATCH V2 26/27] mmc: mmci: add DT bindings for STM32 sdmmc Ludovic Barre
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