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mmc: rockchip_sdhci: Disable DMA mode using a device tree property

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Loading part of TF-A into SRAM from eMMC using DMA fails on RK3399
similar to other Rockchip SoCs. Checksum validation fails with:

  ## Checking hash(es) for Image atf-2 ... sha256 error!
  Bad hash value for 'hash' hash node in 'atf-2' image node
  spl_load_simple_fit: can't load image loadables index 1 (ret = -1)
  mmc_load_image_raw_sector: mmc block read error
  SPL: failed to boot from all boot devices
  ### ERROR ### Please RESET the board ###

Add a device tree property, u-boot,spl-fifo-mode, to control when the
rockchip_sdhci driver should disable the use of DMA and fallback on PIO
mode. Same device tree property is used by the rockchip_dw_mmc driver.

In commit 2cc6cde647 ("mmc: rockchip_sdhci: Limit number of blocks
read in a single command") the DMA mode was disabled using a CONFIG
option on RK3588. Revert that and instead disable DMA using the device
tree property for all RK3588 boards, also apply similar workaround for
all RK3399 boards.

Fixes: 2cc6cde647 ("mmc: rockchip_sdhci: Limit number of blocks read in a single command")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Quentin Schulz <foss+uboot@0leil.net> # RK3399 Puma, RK3588 Tiger
This commit is contained in:
Jonas Karlman 2023-05-06 17:41:11 +00:00 committed by Kever Yang
parent 41fc80b8da
commit 3b804b370d
4 changed files with 10 additions and 1 deletions
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1
arch/arm/dts/rk3399-u-boot.dtsi
View file

@ -120,6 +120,7 @@
&sdhci {
max-frequency = <200000000>;
bootph-all;
u-boot,spl-fifo-mode;
};
&sdmmc {

1
arch/arm/dts/rk3588s-u-boot.dtsi
View file

@ -153,6 +153,7 @@
&sdhci {
bootph-pre-ram;
u-boot,spl-fifo-mode;
};
&uart2 {

1
configs/rock5b-rk3588_defconfig
View file

@ -60,7 +60,6 @@ CONFIG_MMC_DW=y
CONFIG_MMC_DW_ROCKCHIP=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_SDMA=y
# CONFIG_SPL_MMC_SDHCI_SDMA is not set
CONFIG_MMC_SDHCI_ROCKCHIP=y
CONFIG_ETH_DESIGNWARE=y
CONFIG_GMAC_ROCKCHIP=y

8
drivers/mmc/rockchip_sdhci.c
View file

@ -589,6 +589,14 @@ static int rockchip_sdhci_probe(struct udevice *dev)
if (ret)
return ret;
/*
* Disable use of DMA and force use of PIO mode in SPL to fix an issue
* where loading part of TF-A into SRAM using DMA silently fails.
*/
if (IS_ENABLED(CONFIG_SPL_BUILD) &&
dev_read_bool(dev, "u-boot,spl-fifo-mode"))
host->flags &= ~USE_DMA;
/*
* Reading more than 4 blocks with a single CMD18 command in PIO mode
* triggers Data End Bit Error on RK3568 and RK3588. Limit to reading