FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2025-01-10 19:43:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

mmc: mmci: add clock divider for stm32 sdmmc

Browse Source 
The STM32 sdmmc variant has a different clock divider.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ludovic Barre 2018-10-08 14:08:52 +02:00 committed by Ulf Hansson
parent 15878e5846
commit 00e930d87d
2 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mmc/host/mmci.c
View File

@ -1862,6 +1862,8 @@ 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

2
drivers/mmc/host/mmci.h
View File

@ -216,6 +216,7 @@ 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
* @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl
@ -269,6 +270,7 @@ struct variant_data {
u8 datacnt_useless:1;
u8 st_sdio:1;
u8 st_clkdiv:1;
u8 stm32_clkdiv:1;
u8 blksz_datactrl16:1;
u8 blksz_datactrl4:1;
u32 pwrreg_powerup;