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39cc281fb7
linux/drivers/mmc/host
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Maxime Ripard 39cc281fb7 mmc: sunxi: Fix clock frequency change sequence 
The SD specification documents that the clock frequency should only be
changed once gated (Section 3.2.3 - SD Clock Frequency Change Sequence).

The current code first modifies the parent clock, gates it and then
modifies the internal divider. This means that since the parent clock rate
might be changed, the bus clock might be changed as well before it is
gated, which breaks the specification.

Move the gating before the parent rate modification.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Florian Vaussard <florian.vaussard@heig-vd.ch>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-02-13 13:20:48 +01:00
..
android-goldfish.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
atmel-mci.c
au1xmmc.c
bfin_sdh.c
cb710-mmc.c
cb710-mmc.h
davinci_mmc.c mmc: host: Include interrupt.h in mmc host drivers that depends on it 2017-02-13 13:20:01 +01:00
dw_mmc-exynos.c mmc: dw_mmc: Remove the public dw_mmc header file 2017-02-13 13:19:59 +01:00
dw_mmc-exynos.h
dw_mmc-k3.c mmc: dw_mmc: Remove the public dw_mmc header file 2017-02-13 13:19:59 +01:00
dw_mmc-pci.c mmc: dw_mmc: Remove the public dw_mmc header file 2017-02-13 13:19:59 +01:00
dw_mmc-pltfm.c mmc: dw_mmc: Remove the public dw_mmc header file 2017-02-13 13:19:59 +01:00
dw_mmc-pltfm.h
dw_mmc-rockchip.c mmc: dw_mmc: Remove the public dw_mmc header file 2017-02-13 13:19:59 +01:00
dw_mmc-zx.c mmc: dw_mmc: zx: Initial support for ZX mmc controller 2017-02-13 13:20:03 +01:00
dw_mmc-zx.h mmc: dw_mmc: zx: Initial support for ZX mmc controller 2017-02-13 13:20:03 +01:00
dw_mmc.c mmc: dw_mmc: Add fifo watermark alignment property 2017-02-13 13:20:02 +01:00
dw_mmc.h mmc: dw_mmc: Add fifo watermark alignment property 2017-02-13 13:20:02 +01:00
jz4740_mmc.c mmc: delete is_first_req parameter from pre-request callback 2016-11-29 09:05:27 +01:00
Kconfig mmc: dw_mmc: zx: Initial support for ZX mmc controller 2017-02-13 13:20:03 +01:00
Makefile mmc: dw_mmc: zx: Initial support for ZX mmc controller 2017-02-13 13:20:03 +01:00
meson-gx-mmc.c mmc: meson: cleanup stray debug messages 2017-02-13 13:20:40 +01:00
mmc_spi.c
mmci_qcom_dml.c
mmci_qcom_dml.h
mmci.c mmc: mmci: avoid clearing ST Micro busy end interrupt mistakenly 2017-02-08 12:22:27 +01:00
mmci.h mmc: mmci: refactor ST Micro busy detection 2016-11-29 09:00:47 +01:00
moxart-mmc.c mmc: moxart: fix wait_for_completion_interruptible_timeout return variable type 2016-09-26 21:31:07 +02:00
mtk-sd.c mmc: mediatek: correct the implementation of msdc_card_busy 2017-02-13 13:20:05 +01:00
mvsdio.c
mvsdio.h
mxcmmc.c mmc: host: use the defined function to check whether card is removable 2016-07-25 10:34:21 +02:00
mxs-mmc.c mmc: mxs-mmc: Implement CMD23 support 2017-02-13 13:20:27 +01:00
of_mmc_spi.c
omap_hsmmc.c mmc: delete is_first_req parameter from pre-request callback 2016-11-29 09:05:27 +01:00
omap.c mmc: omap: Don't use mmc_card_present() when validating for inserted card 2017-02-13 13:20:23 +01:00
pxamci.c mmc: pxamci: fix potential oops 2016-07-18 11:50:40 +02:00
pxamci.h
rtsx_pci_sdmmc.c mmc: use empty initializer list to zero-clear structures 2017-02-13 13:19:54 +01:00
rtsx_usb_sdmmc.c mmc: use empty initializer list to zero-clear structures 2017-02-13 13:19:54 +01:00
s3cmci.c mmc: s3cmci: include linux/interrupt.h for tasklet_struct 2017-02-13 13:20:19 +01:00
s3cmci.h mmc: s3cmci: Register cpufreq notifier only on S3C24xx 2016-07-25 10:34:46 +02:00
sdhci_f_sdh30.c mmc: sdhci-pltfm: Drop define for SDHCI_PLTFM_PMOPS 2016-07-29 11:29:04 +02:00
sdhci-acpi.c mmc: sdhci-acpi: support deferred probe 2017-02-13 13:20:26 +01:00
sdhci-bcm-kona.c mmc: sdhci-bcm-kona: fix error return code in sdhci_bcm_kona_probe() 2016-09-26 21:31:08 +02:00
sdhci-brcmstb.c mmc: sdhci-brcmstb: Fix incorrect capability 2016-09-26 21:31:28 +02:00
sdhci-cadence.c mmc: sdhci-cadence: Include mmc.h 2017-02-13 13:19:59 +01:00
sdhci-cns3xxx.c mmc: sdhci-pltfm: Drop define for SDHCI_PLTFM_PMOPS 2016-07-29 11:29:04 +02:00
sdhci-dove.c mmc: sdhci-pltfm: Drop define for SDHCI_PLTFM_PMOPS 2016-07-29 11:29:04 +02:00
sdhci-esdhc-imx.c mmc: sdhci-esdhc-imx: Correct two register accesses 2016-10-13 08:58:03 +02:00
sdhci-esdhc.h mmc: sdhci-of-esdhc: avoid clock glitch when frequency is changing 2017-02-13 13:20:15 +01:00
sdhci-iproc.c mmc: sdhci-iproc: Increase max_blk_size for bcm2835 2017-02-13 13:19:55 +01:00
sdhci-msm.c mmc: sdhci-msm: Remove unnecessary comments of CDC init sequence 2017-02-13 13:20:46 +01:00
sdhci-of-arasan.c mmc: sdhci-of-arasan: add sdhci_arasan_voltage_switch for arasan, 5.1 2016-10-10 14:01:33 +02:00
sdhci-of-at91.c mmc: sdhci-of-at91: Fix module autoload 2016-11-29 09:00:29 +01:00
sdhci-of-esdhc.c mmc: sdhci-of-esdhc: avoid clock glitch when frequency is changing 2017-02-13 13:20:15 +01:00
sdhci-of-hlwd.c mmc: sdhci-pltfm: Drop define for SDHCI_PLTFM_PMOPS 2016-07-29 11:29:04 +02:00
sdhci-pci-core.c mmc: sdhci-pci: Add support for HS200 tuning mode on AMD, eMMC-4.5.1 2017-02-13 13:20:14 +01:00
sdhci-pci-data.c
sdhci-pci-o2micro.c
sdhci-pci-o2micro.h
sdhci-pci.h mmc: sdhci-pci: Remove unused member cd_con_id 2017-02-13 13:20:06 +01:00
sdhci-pic32.c
sdhci-pltfm.c mmc: sdhci: Remove ->platform_init() callback as it's no longer used 2016-09-26 21:31:16 +02:00
sdhci-pltfm.h mmc: sdhci: remove unneeded (void *) casts in sdhci_(pltfm_)priv() 2016-11-29 09:01:00 +01:00
sdhci-pxav2.c mmc: sdhci-pltfm: Drop define for SDHCI_PLTFM_PMOPS 2016-07-29 11:29:04 +02:00
sdhci-pxav3.c mmc: sdhci: Rename sdhci_set_power() to sdhci_set_power_noreg() 2016-10-10 14:20:41 +02:00
sdhci-s3c.c mmc: sdhci-s3c: use the bitops API for bit operation 2017-02-13 13:20:36 +01:00
sdhci-sirf.c mmc: sdhci-sirf: Remove non needed #ifdef CONFIG_PM* for dev_pm_ops 2016-07-27 11:25:23 +02:00
sdhci-spear.c
sdhci-st.c mmc: sdhci-st: Handle interconnect clock 2016-09-12 10:31:43 +02:00
sdhci-tegra.c mmc: tegra: Mark 64-bit DMA broken on Tegra124 2016-09-26 21:31:23 +02:00
sdhci.c mmc: sdhci: Clear SDHCI_HS400_TUNING flag after platform_execute_tuning 2017-02-13 13:20:30 +01:00
sdhci.h mmc: host: Include interrupt.h in mmc host drivers that depends on it 2017-02-13 13:20:01 +01:00
sdricoh_cs.c
sh_mmcif.c mmc: sh_mmcif: Remove unused clk_ctrl2_present from the platform data 2017-02-13 13:19:58 +01:00
sh_mobile_sdhi.c mmc: sh_mobile_sdhi: add support for 2 clocks 2017-02-13 13:20:41 +01:00
sunxi-mmc.c mmc: sunxi: Fix clock frequency change sequence 2017-02-13 13:20:48 +01:00
tifm_sd.c
tmio_mmc_dma.c
tmio_mmc_pio.c mmc: tmio: discard obsolete SDIO irqs before enabling irqs 2017-02-13 13:20:35 +01:00
tmio_mmc.c
tmio_mmc.h mmc: tmio: discard obsolete SDIO irqs before enabling irqs 2017-02-13 13:20:35 +01:00
toshsd.c
toshsd.h
usdhi6rol0.c
ushc.c
via-sdmmc.c mmc: host: Include interrupt.h in mmc host drivers that depends on it 2017-02-13 13:20:01 +01:00
vub300.c mmc: vub300: Don't use mmc_card_present() when validating for inserted card 2017-02-13 13:20:23 +01:00
wbsd.c mmc: wbsd: safer check if dma_addr is valid DMA address 2017-02-13 13:20:26 +01:00
wbsd.h
wmt-sdmmc.c mmc: host: Include interrupt.h in mmc host drivers that depends on it 2017-02-13 13:20:01 +01:00