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[v2,0/5] mtd: spi: arm: rk3399: rock-pi-4: u-boot/next Support SPI NOR Flash in Rock Pi 4 (XTX xt25f32b)

Message ID 20220715162603.GA2143@begut
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Series mtd: spi: arm: rk3399: rock-pi-4: u-boot/next Support SPI NOR Flash in Rock Pi 4 (XTX xt25f32b) | expand

Message

Xavier Drudis Ferran July 15, 2022, 4:26 p.m. UTC 
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/next.

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.

Comments

Xavier Drudis Ferran July 15, 2022, 4:37 p.m. UTC | #1 
Oops. Sorry to mess up the Reply-To. 
I meant to send 1/5 .. 5/5 as replies to 0/5 but I sent them out of
mail thread.