From: ludovic.Barre@st.com (Ludovic Barre)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 14/19] mmc: mmci: add clock divider for stm32 sdmmc
Date: Tue, 12 Jun 2018 15:14:35 +0200 [thread overview]
Message-ID: <1528809280-31116-15-git-send-email-ludovic.Barre@st.com> (raw)
In-Reply-To: <1528809280-31116-1-git-send-email-ludovic.Barre@st.com>
From: Ludovic Barre <ludovic.barre@st.com>
The STM32 sdmmc variant has a different clock divider.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
drivers/mmc/host/mmci.c | 2 ++
drivers/mmc/host/mmci.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 9af7db8..e24fd1e 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1451,6 +1451,8 @@ static int mmci_probe(struct amba_device *dev,
*/
if (variant->st_clkdiv)
mmc->f_min = DIV_ROUND_UP(host->mclk, 257);
+ else if (variant->stm32_clkdiv)
+ mmc->f_min = DIV_ROUND_UP(host->mclk, 2046);
else if (variant->explicit_mclk_control)
mmc->f_min = clk_round_rate(host->clk, 100000);
else
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 4b4cd1d..227927e 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -252,6 +252,7 @@ struct mmci_host;
* @data_cmd_enable: enable value for data commands.
* @st_sdio: enable ST specific SDIO logic
* @st_clkdiv: true if using a ST-specific clock divider algorithm
+ * @stm32_clkdiv: true if using a STM32-specific clock divider algorithm
* @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
* @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl
* register
@@ -312,6 +313,7 @@ struct variant_data {
bool datacnt_remain;
bool st_sdio;
bool st_clkdiv;
+ bool stm32_clkdiv;
bool blksz_datactrl16;
bool blksz_datactrl4;
u32 pwrreg_powerup;
--
2.7.4
next prev parent reply other threads:[~2018-06-12 13:14 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-12 13:14 [PATCH 00/19] mmc: mmci: add stm32 sdmmc variant Ludovic Barre
2018-06-12 13:14 ` [PATCH 01/19] mmc: mmci: regroup and define dma operations Ludovic Barre
2018-07-05 15:17 ` Ulf Hansson
2018-07-11 9:41 ` Ludovic BARRE
2018-07-11 12:16 ` Ulf Hansson
2018-07-12 9:09 ` Ludovic BARRE
2018-06-12 13:14 ` [PATCH 02/19] mmc: mmci: merge qcom dml feature into mmci dma Ludovic Barre
2018-07-05 15:26 ` Ulf Hansson
2018-07-11 15:19 ` Ludovic BARRE
2018-07-13 11:17 ` Ulf Hansson
2018-07-13 13:08 ` Ludovic BARRE
2018-07-30 15:15 ` Ulf Hansson
2018-06-12 13:14 ` [PATCH 03/19] mmc: mmci: add datactrl block size variant property Ludovic Barre
2018-06-12 13:14 ` [PATCH 04/19] mmc: mmci: expand startbiterr to irqmask and error check Ludovic Barre
2018-06-12 13:14 ` [PATCH 05/19] mmc: mmci: allow to overwrite clock/power procedure to specific variant Ludovic Barre
2018-07-05 13:48 ` Ulf Hansson
2018-07-11 12:19 ` Ludovic BARRE
2018-07-11 12:38 ` Ulf Hansson
2018-06-12 13:14 ` [PATCH 06/19] mmc: mmci: add variant properties to define cpsm & cmdresp bits Ludovic Barre
2018-07-05 14:20 ` Ulf Hansson
2018-06-12 13:14 ` [PATCH 07/19] mmc: mmci: add variant property to define dpsm bit Ludovic Barre
2018-06-12 13:14 ` [PATCH 08/19] mmc: mmci: add variant property to define irq pio mask Ludovic Barre
2018-06-12 13:14 ` [PATCH 09/19] mmc: mmci: add variant property to write datactrl before command Ludovic Barre
2018-06-12 13:14 ` [PATCH 10/19] mmc: mmci: add variant property to allow remain data Ludovic Barre
2018-07-05 13:55 ` Ulf Hansson
2018-06-12 13:14 ` [PATCH 11/19] mmc: mmci: add variant property to check specific data constraint Ludovic Barre
2018-06-12 13:14 ` [PATCH 12/19] mmc: mmci: add variant property to request a reset Ludovic Barre
2018-06-25 21:23 ` Rob Herring
2018-06-12 13:14 ` [PATCH 13/19] mmc: mmci: send stop cmd if a data command fail Ludovic Barre
2018-07-04 13:37 ` Ulf Hansson
2018-07-11 8:57 ` Ludovic BARRE
2018-06-12 13:14 ` Ludovic Barre [this message]
2018-06-12 13:14 ` [PATCH 15/19] mmc: mmci: add stm32 sdmmc registers Ludovic Barre
2018-06-12 13:14 ` [PATCH 16/19] mmc: mmci: add DT bindings for STM32 sdmmc Ludovic Barre
2018-06-25 21:47 ` Rob Herring
2018-06-12 13:14 ` [PATCH 17/19] mmc: mmci: add stm32 sdmmc idma support Ludovic Barre
2018-06-12 13:14 ` [PATCH 18/19] mmc: mmci: add specific clk/pwr procedure for stm32 sdmmc Ludovic Barre
2018-07-05 14:49 ` Ulf Hansson
2018-06-12 13:14 ` [PATCH 19/19] mmc: mmci: add stm32 sdmmc variant Ludovic Barre
2018-06-29 13:51 ` [PATCH 00/19] " Ludovic BARRE
2018-06-29 15:18 ` Ulf Hansson
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