forked from luck/tmp_suning_uos_patched
14cc2044c1
[ Upstream commit 7e842d70fe599bc13594b650b2144c4b6e6d6bf1 ]
HyperFlash devices fail to probe:
rpc-if-hyperflash rpc-if-hyperflash: probing of hyperbus device failed
In HyperFlash or Octal-SPI Flash mode, the Transfer Data Enable bits
(SPIDE) in the Manual Mode Enable Setting Register (SMENR) are derived
from half of the transfer size, cfr. the rpcif_bits_set() helper
function. However, rpcif_reg_{read,write}() does not take the bus size
into account, and does not double all Manual Mode Data Register access
sizes when communicating with a HyperFlash or Octal-SPI Flash device.
Fix this, and avoid the back-and-forth conversion between transfer size
and Transfer Data Enable bits, by explicitly storing the transfer size
in struct rpcif, and using that value to determine access size in
rpcif_reg_{read,write}().
Enforce that the "high" Manual Mode Read/Write Data Registers
(SM[RW]DR1) are only used for 8-byte data accesses.
While at it, forbid writing to the Manual Mode Read Data Registers,
as they are read-only.
Fixes: fff53a551db50f5e ("memory: renesas-rpc-if: Correct QSPI data transfer in Manual mode")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/cde9bfacf704c81865f57b15d1b48a4793da4286.1649681476.git.geert+renesas@glider.be
Link: https://lore.kernel.org/r/20220420070526.9367-1-krzysztof.kozlowski@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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| .. | ||
| samsung | ||
| tegra | ||
| .gitignore | ||
| atmel-ebi.c | ||
| atmel-sdramc.c | ||
| brcmstb_dpfe.c | ||
| bt1-l2-ctl.c | ||
| da8xx-ddrctl.c | ||
| emif-asm-offsets.c | ||
| emif.c | ||
| emif.h | ||
| fsl_ifc.c | ||
| fsl-corenet-cf.c | ||
| jedec_ddr_data.c | ||
| jedec_ddr.h | ||
| jz4780-nemc.c | ||
| Kconfig | ||
| Makefile | ||
| mtk-smi.c | ||
| mvebu-devbus.c | ||
| of_memory.c | ||
| of_memory.h | ||
| omap-gpmc.c | ||
| pl172.c | ||
| pl353-smc.c | ||
| renesas-rpc-if.c | ||
| stm32-fmc2-ebi.c | ||
| ti-aemif.c | ||
| ti-emif-pm.c | ||
| ti-emif-sram-pm.S | ||