* [PATCH v3 0/4] mtd: spi: spi-nor: rk3399: rock-pi-4: u-boot/next Support SPI NOR Flash in Rock Pi 4 (XTX xt25f32b)
@ 2022-07-20 15:32 Xavier Drudis Ferran
0 siblings, 0 replies; 2+ messages in thread
From: Xavier Drudis Ferran @ 2022-07-20 15:32 UTC (permalink / raw)
To: u-boot
The Radxa Rock Pi 4 board is sold from revision 1.4 with a soldered
4Mb SPI NOR Flash. This series allows to use it from U-Boot and boot
from it.
This series applies to u-boot/master.
Changes since v2:
- rebased on master
- droped 5th path, and enabled CONFIG_SPL_DM_SEQ_ALIAS instead
to have the flash on spi1 both on SPL and U-Boot proper.
Changes since v1:
- Changed bus number to 1 in SPL to match U-Boot proper (before it
was bus 0 in SPL and bus 1 in U-Boot).
- Generalization. v1 did a first soft_reset in 8_8_8_DTR but that
wouldn't work since Pratyush Yadav fixed supports_op() in commit
5752d6ae8daacbd ("spi: spi-mem: add spi_mem_dtr_supports_op()").
So now we try a few protocols until 1_1_1 is supported by
controller and device. Might work for more systems.
^ permalink raw reply [flat|nested] 2+ messages in thread* [PATCH v3 0/4] mtd: spi: spi-nor: rk3399: rock-pi-4: u-boot/next Support SPI NOR Flash in Rock Pi 4 (XTX xt25f32b)
@ 2022-07-20 15:36 Xavier Drudis Ferran
0 siblings, 0 replies; 2+ messages in thread
From: Xavier Drudis Ferran @ 2022-07-20 15:36 UTC (permalink / raw)
To: u-boot
The Radxa Rock Pi 4 board is sold from revision 1.4 with a soldered
4Mb SPI NOR Flash. This series allows to use it from U-Boot and boot
from it.
This series applies to u-boot/master.
Changes since v2:
- rebased on master
- droped 5th path, and enabled CONFIG_SPL_DM_SEQ_ALIAS instead
to have the flash on spi1 both on SPL and U-Boot proper.
Changes since v1:
- Changed bus number to 1 in SPL to match U-Boot proper (before it
was bus 0 in SPL and bus 1 in U-Boot).
- Generalization. v1 did a first soft_reset in 8_8_8_DTR but that
wouldn't work since Pratyush Yadav fixed supports_op() in commit
5752d6ae8daacbd ("spi: spi-mem: add spi_mem_dtr_supports_op()").
So now we try a few protocols until 1_1_1 is supported by
controller and device. Might work for more systems.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-07-20 15:32 [PATCH v3 0/4] mtd: spi: spi-nor: rk3399: rock-pi-4: u-boot/next Support SPI NOR Flash in Rock Pi 4 (XTX xt25f32b) Xavier Drudis Ferran
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2022-07-20 15:36 Xavier Drudis Ferran
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