u-boot.git/drivers/mmc, branch v2020.07-rc2

mmc: zynq: parse dt when probing

2020-04-27T11:53:13Z

Currently, the entry "bus-width = <8>" in the ZynqMP's sdhci nodes is not evaluated. This results in the bus width staying at its default value (4 bit in HS200 mode). Fix this by calling mmc_of_parse. This function also checks for the "no-1-8-v" and "max-frequency" entries. Remove the handling of those nodes from this driver. Signed-off-by: Benedikt Grassl Reviewed-by: Jaehoon Chung Signed-off-by: Michal Simek

dm: mmc: Update mmc_get_mmc_dev() to use const *

2020-04-24T20:40:09Z

This function does not modify the device to change it to use const *, so that callers with a const udevice * can call it without a cast. Signed-off-by: Simon Glass Reviewed-by: Jaehoon Chung

drivers: mmc: rpmb: do not build for SPL

2020-04-22T12:41:57Z

RPMB support is used by the 'mmc rpmb' command and by the OP-TEE support. We do not need it in SPL. Signed-off-by: Heinrich Schuchardt Reviewed-by: Peng Fan Reviewed-by: Tom Rini

mmc: tmio: sdhi: Implement get_b_max function

2020-04-22T12:41:56Z

Implement get_b_max() for the Renesas R-Car SDHI controller driver, limit the b_max per hardware capabilities such that select Gen2 controllers have 16bit block transfer limit, the rest has 32bit block transfer limit and on Gen3, the block transfer limit on addresses above the 32bit boundary is set to 1/4 of the malloc area. Originally, on Gen3, the block transfers above the 32bit area were limited to PIO only, which resulted in (R8A7795 Salvator-X , HS200 eMMC): => time mmc read 0x0000000700000000 0 0x10000 time: 0.151 seconds => time mmc read 0x0000000700000000 0 0x100000 time: 11.090 seconds with bounce buffer in place and b_max adjustment in place: => time mmc read 0x0000000700000000 0 0x10000 time: 0.156 seconds => time mmc read 0x0000000700000000 0 0x100000 time: 2.349 seconds Note that the bounce buffer does mallocate and free the bounce buffer for every transfer. Experiment which removes this results in further increase of read speed, from 2.349s to 2.156s per 512 MiB of data, which is not such a significant improvement anymore. It might however be interesting to have bounce buffer directly in the MMC core or even block core. Signed-off-by: Marek Vasut Cc: Daniel Schwierzeck Cc: Masahiro Yamada Cc: Peng Fan Cc: Simon Glass Cc: Tom Rini

mmc: Add option to adjust b_max before long read

2020-04-22T12:41:56Z

Add getter function which permits adjusting the maximum number of blocks that could be read in a single sustained read transfer based on the location of the source/target buffer and length, before such transfer starts. This is mainly useful on systems which have various DMA restrictions for different memory locations, e.g. DMA limited to 32bit addresses, and where a bounce buffer is used to work around such restrictions. Since the U-Boot bounce buffer is mallocated, it's size is limited by the malloc area size, and the read transfer to such a buffer must also be limited. However, as not all areas are limited equally, the b_max should be adjusted accordinly as needed to avoid degrading performance unnecessarily. Signed-off-by: Marek Vasut Cc: Daniel Schwierzeck Cc: Masahiro Yamada Cc: Peng Fan Cc: Simon Glass Cc: Tom Rini

mmc: tmio: sdhi: Use bounce buffer to avoid DMA limitations

2020-04-22T12:41:56Z

The R-Car SDHI DMA controller has various restrictions. To work around those restrictions without falling back to PIO, implement bounce buffer with custom alignment check function which tests for those limitations. Signed-off-by: Marek Vasut Cc: Daniel Schwierzeck Cc: Masahiro Yamada Cc: Peng Fan Cc: Simon Glass Cc: Tom Rini

drivers: mmc: iproc_sdhci: move host.mmc init before sdhci_setup_cfg

2020-04-22T12:41:55Z

move host.mmc before sdhci_setup_cfg Signed-off-by: Rayagonda Kokatanur Signed-off-by: Bharat Kumar Reddy Gooty

drivers: mmc: iproc_sdhci: fix compilation warning

2020-04-22T12:41:55Z

set_ios_post return type changed from void to int, correcting the same to fix compilation warning. Signed-off-by: Rayagonda Kokatanur Signed-off-by: Bharat Kumar Reddy Gooty

drivers: mmc: iproc_sdhci: enable broken R1B response quirk

2020-04-22T12:41:55Z

Enable SDHCI_QUIRK_BROKEN_R1B quirk. Signed-off-by: Bharat Kumar Reddy Gooty Signed-off-by: Rayagonda Kokatanur

drivers: mmc: iproc_sdhci: fix possible memory leak

2020-04-22T12:41:55Z

Free the pointer variable 'iproc_sdhci' upon failure to fix possible memory leak. Signed-off-by: Bharat Kumar Reddy Gooty Signed-off-by: Rayagonda Kokatanur