When using the spi-nor master controller always verify the chip select bit in the cs register. Also do not use CDRAM PCS bit in BSPI mode. Additionally make sure to enable/disable BSPI_MAST_N_BOOT_CTRL while using BSPI mode. V2 changes: - Added "Fixes:" tag to 1/2 and 2/2 patches Kamal Dasu (2): spi: bcm-qspi: Avoid setting MSPI_CDRAM_PCS for spi-nor master spi: bcm-qspi: Always read and set BSPI_MAST_N_BOOT_CTRL drivers/spi/spi-bcm-qspi.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH v2 0/2] spi: bcm-qspi: Fix spi-nor chip select logic for BSPI
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- Subject: [PATCH v2 0/2] spi: bcm-qspi: Fix spi-nor chip select logic for BSPI
- From: Kamal Dasu <kdasu.kdev@xxxxxxxxx>
- Date: Thu, 26 Apr 2018 14:47:59 -0400
- Cc: f.fainelli@xxxxxxxxx, bcm-kernel-feedback-list@xxxxxxxxxxxx, jon.mason@xxxxxxxxxxxx, yendapally.reddy@xxxxxxxxxxxx, Kamal Dasu <kdasu.kdev@xxxxxxxxx>
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