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2017-04-24clk: apn806: fix spelling mistake: "mising" -> "missing"Colin Ian King1-1/+1
trivial fix to spelling mistake in dev_warn message Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-of-esdhc: add delay between tuning cyclesyangbo lu1-0/+1
It's observed that eSDHC needed delay between tuning cycles for HS200 successful tuning. This patch is to set 1ms delay for that. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: Control the delay between tuning commandsAdrian Hunter2-3/+10
The delay between tuning commands for SD cards is not part of the specification. A driver that needs it probably needs it for eMMC too, whereas most drivers would probably like to set it to 0. Make it a host member (host->tuning_delay) that defaults to the existing behaviour. Drivers can set it to zero to eliminate the delay, or set it to a positive value to always have a delay. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-of-esdhc: add tuning supportyangbo lu2-0/+25
eSDHC uses tuning block for tuning procedure. So the tuning block control register must be configured properly before tuning. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-of-esdhc: add support for signal voltage switchyangbo lu2-0/+75
eSDHC supports signal voltage switch from 3.3v to 1.8v by eSDHC_PROCTL[VOLT_SEL] bit. This bit changes the value of output signal SDHC_VS, and there must be a control circuit out of eSDHC to change the signal voltage according to SDHC_VS output signal. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-of-esdhc: add peripheral clock supportyangbo lu2-2/+72
eSDHC could select peripheral clock or platform clock as clock source by the PCS bit of eSDHC Control Register, and this bit couldn't be reset by software reset for all. In default, the platform clock is used. But we have to use peripheral clock since it has a higher frequency to support eMMC HS200 mode and SD UHS-I mode. This patch is to add peripheral clock support and use it instead of platform clock if it's declared in eSDHC dts node. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-pci: Allow for 3 bytes from Intel DSMAdrian Hunter1-6/+6
The DSM used by some Intel controllers can return a 3 byte package. Allow for that by using memcpy to copy the bytes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: cavium: Fix a shift wrapping bugDan Carpenter1-1/+1
"dat" is a u64 and "shift" starts as 54 so this is a shift wrapping bug. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: cavium: Check pointer before de-referenceJan Glauber1-1/+1
Add a pointer check to prevent this smatch warning: drivers/mmc/host/cavium.c:803 cvm_mmc_request() error: we previously assumed 'cmd->data' could be null (see line 782) This is a theoretical fix because MMC_CMD_ADTC seems to imply that cmd->data is not null. Nevertheless checking cmd->data before using it improves readability. Signed-off-by: Jan Glauber <jglauber@cavium.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: cavium: Remove redundant pointer checkJan Glauber1-1/+1
Remove redundant mmc->card check reported by smatch: drivers/mmc/host/cavium.c:694 cvm_mmc_dma_request() warn: variable dereferenced before check 'mmc->card' (see line 675) Signed-off-by: Jan Glauber <jglauber@cavium.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: meson-gx: add support for descriptor chain modeHeiner Kallweit1-16/+156
So far a bounce buffer is used to serialize the scatterlist(s). This overhead can be avoided by switching to descriptor chain mode. As result the performance is drastically improved. On a Odroid-C2 with a 128 GB eMMC module raw reads reach 140 MB/s. Prerequisite for descriptor chain mode is that all scatterlist buffers are 8 byte aligned for 64-bit DMA. That's not always the case, at least the brcmfmac SDIO WiFi driver is known to cause problems. Therefore, for each request, check upfront whether all scatterlist buffers are 8 byte aligned and fall back to bounce buffer mode if that's not the case. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: meson-gx: add basic tuning for rx clock phaseHeiner Kallweit1-0/+49
This patch adds basic tuning which changes the rx clock phase only until a working setting is found. On a Odroid C2 with 128GB eMMC card and 200 MHz MMC clock only 180° rx clock phase make the system boot w/o CRC errors. With other MMC devices / clock speeds this might be different, therefore don't change the driver config in general. When retuning skip the currently active parameter set. This avoids the current problematic config to be chosen again if it causes CRC errors just occasionally. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: meson-gx: introduce struct meson_tuning_paramsHeiner Kallweit1-1/+16
Introduce struct meson_tuning_params for storing the clock phase configurations. There's no functional change because tx and rx clock phase were implicitely set to CLK_PHASE_0 before. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: core: add proper be32 annotationWinkler, Tomas4-17/+16
Annotate big endian values correctly and make sparse happy. In mmc_app_send_scr remove scr function parameter as it was updating card->raw_scr anyway. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-cadence: add parsing sdhci propertiesPiotr Sroka1-0/+2
Add calling sdhci_get_of_property function to parse sdhci properties. Signed-off-by: Piotr Sroka <piotrs@cadence.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: host: omap_hsmmc: checking for NULL instead of IS_ERR()Dan Carpenter1-2/+2
devm_pinctrl_get() returns error pointers, it never returns NULL. Fixes: 455e5cd6f736 ("mmc: omap_hsmmc: Pin remux workaround to support SDIO interrupt on AM335x") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24MAINTAINERS: add entry for Marvell Xenon MMC Host Controller driversHu Ziji1-0/+7
Add maintainer entry for Marvell Xenon eMMC/SD/SDIO Host Controller drivers. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-xenon: Add SoC PHY PAD voltage controlHu Ziji3-1/+113
Some SoCs have PHY PAD outside Xenon IP. PHY PAD voltage should match signalling voltage in use. Add generic SoC PHY PAD voltage control interface. Implement Aramda-3700 SoC PHY PAD voltage control. Signed-off-by: Hu Ziji <huziji@marvell.com> Tested-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-xenon: Add support to PHYs of Marvell Xenon SDHCHu Ziji4-3/+774
Marvell Xenon eMMC/SD/SDIO Host Controller contains PHY. Multiple types of PHYs are supported. Add support to multiple types of PHYs init and configuration. Add register definitions of PHYs. Xenon PHY cannot fit in kernel common PHY framework. Xenon SDHC PHY register is a part of Xenon SDHC register set. Besides, MMC initialization has to call several PHY functions to complete timing setting. Those PHY setting functions have to access SDHC registers and know current MMC setting, such as bus width, clock frequency and speed mode. As a result, implement Xenon PHY in MMC host directory. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci-xenon: Add Marvell Xenon SDHC core functionalityHu Ziji4-0/+612
Add Xenon eMMC/SD/SDIO host controller core functionality. Add Xenon specific initialization process. Add Xenon specific mmc_host_ops APIs. Add Xenon specific register definitions. Add CONFIG_MMC_SDHCI_XENON support in drivers/mmc/host/Kconfig. Marvell Xenon SDHC conforms to SD Physical Layer Specification Version 3.01 and is designed according to the guidelines provided in the SD Host Controller Standard Specification Version 3.00. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>