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path: root/drivers/mmc/mmc-uclass.c
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2019-02-16mmc: Downgrade SD/MMC from UHS/HS200/HS400 modes before bootMarek Vasut
Older kernel versions or systems which do not connect eMMC reset line properly may not be able to handle situations where either the eMMC is left in HS200/HS400 mode or SD card in UHS modes by the bootloader and may misbehave. Downgrade the eMMC to HS/HS52 mode and/or SD card to non-UHS mode before booting the kernel to allow such older kernels to work with modern U-Boot. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Tom Rini <trini@konsulko.com>
2018-12-03mmc: Parse HS400 DT propertiesMarek Vasut
Add HS400 properties parsing support to mmc_of_parse(). Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Jean-Jacques Hiblot <jjhiblot@ti.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Peng Fan <peng.fan@nxp.com> Cc: Simon Glass <sjg@chromium.org>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTRTom Rini
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-01-22mmc: let mmc_of_parse() fail for insane bus-width valueMasahiro Yamada
You must fix your DT if it specifies insane bus-width, for example, bus-width = <3>; debug() is not displayed in usual configuration, so people will not even notice weirdness. Use dev_err() instead, then let it fail. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-01-22mmc: do not overwrite cfg->f_max if "max-frequency" if missingMasahiro Yamada
mmc_of_parse() in U-Boot is a pussy helper; it sets cfg->f_max to 52MHz even if DT does not provide "max-frequency" at all. This can overwrite cfg->f_max that may have been set to a reasonable default. As the DT binding says, "max-frequency" is an optional property. Do nothing if DT does not specify it. This is the behavior of mmc_of_parse() in Linux. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-01-12mmc: add a Kconfig option to enable the support for MMC write operationsJean-Jacques Hiblot
This allows using CONFIG_IS_ENABLED(MMC_WRITE) to compile out code needed only if write support is required. The option is added for u-boot and for SPL Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-01-12mmc: make UHS and HS200 optionalJean-Jacques Hiblot
Supporting USH and HS200 increases the code size as it brings in IO voltage control, tuning and fatter data structures. Use Kconfig configuration to select which of those features should be built in. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-01-12dm: mmc: update mmc_of_parse()Jean-Jacques Hiblot
* convert to livetree API * don't fail because of an invalid bus-width, instead default to 1-bit. * recognize 1.2v DDR and 1.2v HS200 flags Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-01-12dm: mmc: Add a library function to parse generic dt bindingKishon Vijay Abraham I
Add a new function to parse host controller dt node and set mmc_config. This function can be used by mmc controller drivers to set the generic mmc_config. This function can be extended to set other UHS mode caps once UHS mode support is added. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-01-12mmc: Add support for UHS modesJean-Jacques Hiblot
Add UHS modes to the list of supported modes, get the UHS capabilites of the SDcard and implement the procedure to switch the voltage (UHS modes use 1v8 IO lines) During the voltage switch procedure, DAT0 is used by the card to signal when it's ready. The optional card_busy() callback can be used to get this information from the host driver. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-01-12mmc: Add a execute_tuning() callback to the mmc operations.Kishon Vijay Abraham I
Tuning is a mandatory step in the initialization of SDR104 and HS200 modes. This callback execute the tuning process. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-01-12mmc: Add a new callback function to perform the 74 clocks cycle sequenceJean-Jacques Hiblot
Add a new callback function *send_init_stream* which start a sequence of at least 74 clock cycles. The mmc core uses *mmc_send_init_stream* in order to invoke the callback function. This will be used during power cycle where the specification requires such a sequence after power up. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2017-08-17dm: mmc: Drop CONFIG_DM_MMC_OPSSimon Glass
All boards which use DM_MMC have now been converted to use DM_MMC_OPS. Drop the option and good riddance. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-01dm: mmc: Allow disabling driver model in SPLSimon Glass
At present if U-Boot proper uses driver model for MMC, then SPL has to also. While this is desirable, it places a significant barrier to moving to driver model in some cases. For example, with a space-constrained SPL it may be necessary to enable CONFIG_SPL_OF_PLATDATA which involves adjusting some drivers. Add new SPL versions of the options for DM_MMC, DM_MMC_OPS and BLK. By default these follow their non-SPL versions, but this can be changed by boards which need it. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-09dm: mmc: Avoid probing block devices in find_mmc_device()Simon Glass
We do not need to probe the block device here, so avoid doing so. The MMC device itself must be active, but the block device can come later. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: mmc: Convert uclass to livetreeSimon Glass
Update the mmc uclass to support a live device tree. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: mmc: Rewrite mmc_blk_probe()Simon Glass
This function is called when the MMC block device is being probed. There is a recursive call in this function since find_mmc_device() itself can cause the MMC device to be probed. Admittedly the MMC device should already be probed, since we would not be probing its child otherwise, but the current code is unnecessarily convoluted. Rewrite this to access the MMC structure directly. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: mmc: Check that drivers have operationsSimon Glass
When binding a new MMC device, make sure that it has the required operations. Since for now we still support *not* having the operations (with CONFIG_DM_MMC_OPS not enabled) it makes sense to add this check. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: core: Replace of_offset with accessor (part 2)Simon Glass
At present devices use a simple integer offset to record the device tree node associated with the device. In preparation for supporting a live device tree, which uses a node pointer instead, refactor existing code to access this field through an inline function. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-04dm: core: Add flags parameter to device_remove()Stefan Roese
This patch adds the flags parameter to device_remove() and changes all calls to this function to provide the default value of DM_REMOVE_NORMAL for "normal" device removal. This is in preparation for the driver specific pre-OS (e.g. DMA cancelling) remove support. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
2017-02-09mmc: init mmc block devices on probeFiach Antaw
MMC devices accessed exclusively via the driver model were not being initialized before being exposed as block devices, causing issues in scenarios where the MMC device is first accessed via the uclass block interface. Signed-off-by: Fiach Antaw <fiach.antaw@uqconnect.edu.au>
2017-02-09mmc: mmc-uclass: use the fixed devnum with alias nodeJaehoon Chung
If there are alias nodes as "mmc", use the devnum as alias index number. This patch is for fixing a problem of Exynos4 series. Problem is the below thing. Current legacy mode: EXYNOS DWMMC: 0, SAMSUNG SDHCI: 1 After using DM: SAMSUNG SDHCI: 0, EXYNOS DWMMC: 1 Dev index is swapped. Then u-boot can't find the kernel image..because it is already set to 0 as mmcdev. If change from legacy to DM, also needs to touch all exynos4 config file. For using simply, just supporting the fixed devnum with alias node is better than it. Usage: alaise { .... mmc0 = &sdhci2; /* eMMC */ mmc1 = &sdhci1; /* SD */ ... } Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-28mmc: refactor two core functionsMasahiro Yamada
Drop unneeded variables and assignments. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-10-09dm: mmc: Support eraseSimon Glass
At present erase is not suported with CONFIG_DM_OPS. Add it so that MMC devices can be erased. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-08-05mmc: display mmc list information like mmc_legacy typeXu Ziyuan
It's nicer to see this: => mmc list dwmmc@ff0c0000: 0 dwmmc@ff0f0000: 1 (eMMC) than this: => mmc list dwmmc@ff0c0000: 0dwmmc@ff0f0000: 1 (eMMC) With the former, it's much clearer which mmc devices are on. Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-07-31mmc-uclass: correct the device numberKever Yang
Not like the mmc-legacy which the devnum starts from 1, it starts from 0 in mmc-uclass, so the device number should be (devnum + 1) in get_mmc_num(). Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-07-11dm: mmc: Add a way to use driver model for MMC operationsSimon Glass
The driver model conversion for MMC has moved in small steps. The first step was to have an MMC device (CONFIG_DM_MMC). The second was to use a child block device (CONFIG_BLK). The final one is to use driver model for MMC operations (CONFIG_DM_MMC_OP). Add support for this. The immediate priority is to make all boards that use DM_MMC also use those other two options. This will allow them to be removed. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-11dm: mmc: Move CONFIG_BLK code into the mmc uclassSimon Glass
Rather than having #ifdef in mmc.c, move this code into the uclass file. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-05-17dm: mmc: Implement the MMC functions for block devicesSimon Glass
Implement the functions in mmc_legacy.c for driver-model block devices, so that MMC can use driver model for these. This allows CONFIG_BLK to be enabled with DM_MMC. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21dm: mmc: Add an MMC uclassSimon Glass
Add basic support for MMC, providing a uclass which can set up an MMC device. This allows MMC drivers to move to using driver model. Signed-off-by: Simon Glass <sjg@chromium.org>