The SD/MMC block on the RZ/G3E ("R9A09G047") SoC is similar to that
of the RZ/V2H, but the SD0 channel has only dedicated pins, so we must
use SD_STATUS register to control voltage and power enable (internal
regulator).
For SD1 and SD2 channel we can either use gpio regulator or internal
regulator (using SD_STATUS register) for voltage switching.
For SD0, fixed voltage(eMMC) uses fixed regulator and non-fixed voltage
(SD) uses internal regulator.
v3->v4:
* Dropped dts patches as it is deferred for queuing.
* Arranged variables of same types close to each other in probe() and
dropped patch#2.
* Added sd_ctrl_read32().
* Replaced sd_ctrl_read32_rep()->sd_ctrl_read32().
v2->v3:
* Collected tags
* Renamed internal regulator labels vqmmc_sdhi{0..2}->sdhi{0..2}_vqmmc.
* Updated regulator phandles on SoM/Board dts.
* Dropped renaming the gpio regulator label vqmmc_sdhi1->vqmmc_sdhi1_gpio.
* Renamed node sd0emmc->sd0-emmc
* Renamed sd0-emmc-{ctrl,data,rst}->sd0-{ctrl,data,rst}
* Moved header file gpio.h from patch#6 to patch#8.
* Dropped overriding internal regulator name.
* Dropped #if guard in pinctrl node for SDHI0
* Renamed the label/node sdhi0_pins: sd0->sdhi0_usd_pins: sd0-usd.
v1->v2:
* Collected tags.
* Documented internal regulator as optional property for both RZ/G3E and
RZ/V2H SoCs.
* Updated commit description for regulator used in SD0 fixed and
non-fixed voltage case in patch#3.
* As the node enabling of internal regulator is controlled through status,
added a check for device availability.
* Status of internal regulator is disabled in the SoC .dtsi. Override
the status in the board DTS when needed.
* Added support for enabling SDHI internal regulator in RZ/V2H
* Added missing header file gpio.h
* Used fixed regulator for eMMC on SD0 and dropped sd0-iovs pins for
eMMC.
* Sorted pinctrl nodes for sd2
* Enabled internal regulator for SD2.
* Added support for enabling SD on SDHI0
* Replaced the regulator usd_vdd_3p3v->reg_3p3v.
* Renamed the gpio-hog node sd1-pwr-en->sd1-pwr-en-hog.
* Sorted sd1 pin ctrl nodes.
Biju Das (2):
dt-bindings: mmc: renesas,sdhi: Document RZ/G3E support
mmc: renesas_sdhi: Add support for RZ/G3E SoC
.../devicetree/bindings/mmc/renesas,sdhi.yaml | 16 +++
drivers/mmc/host/renesas_sdhi.h | 1 +
drivers/mmc/host/renesas_sdhi_core.c | 134 ++++++++++++++++++
drivers/mmc/host/tmio_mmc.h | 10 ++
4 files changed, 161 insertions(+)
--
2.43.0
