From 2e6bbfe7b0c0607001b784082c2685b134174fac Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Fri, 13 Sep 2024 23:07:13 +0200 Subject: [PATCH 1/2] spi: airoha: fix dirmap_{read,write} operations SPI_NFI_READ_FROM_CACHE_DONE bit must be written at the end of dirmap_read operation even if it is already set. In the same way, SPI_NFI_LOAD_TO_CACHE_DONE bit must be written at the end of dirmap_write operation even if it is already set. For this reason use regmap_write_bits() instead of regmap_set_bits(). This patch fixes mtd_pagetest kernel module test. Fixes: a403997c1201 ("spi: airoha: add SPI-NAND Flash controller driver") Tested-by: Christian Marangi Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20240913-airoha-spi-fixes-v1-1-de2e74ed4664@kernel.org Signed-off-by: Mark Brown --- drivers/spi/spi-airoha-snfi.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) --- a/drivers/spi/spi-airoha-snfi.c +++ b/drivers/spi/spi-airoha-snfi.c @@ -739,8 +739,13 @@ static ssize_t airoha_snand_dirmap_read( if (err) return err; - err = regmap_set_bits(as_ctrl->regmap_nfi, REG_SPI_NFI_SNF_STA_CTL1, - SPI_NFI_READ_FROM_CACHE_DONE); + /* + * SPI_NFI_READ_FROM_CACHE_DONE bit must be written at the end + * of dirmap_read operation even if it is already set. + */ + err = regmap_write_bits(as_ctrl->regmap_nfi, REG_SPI_NFI_SNF_STA_CTL1, + SPI_NFI_READ_FROM_CACHE_DONE, + SPI_NFI_READ_FROM_CACHE_DONE); if (err) return err; @@ -870,8 +875,13 @@ static ssize_t airoha_snand_dirmap_write if (err) return err; - err = regmap_set_bits(as_ctrl->regmap_nfi, REG_SPI_NFI_SNF_STA_CTL1, - SPI_NFI_LOAD_TO_CACHE_DONE); + /* + * SPI_NFI_LOAD_TO_CACHE_DONE bit must be written at the end + * of dirmap_write operation even if it is already set. + */ + err = regmap_write_bits(as_ctrl->regmap_nfi, REG_SPI_NFI_SNF_STA_CTL1, + SPI_NFI_LOAD_TO_CACHE_DONE, + SPI_NFI_LOAD_TO_CACHE_DONE); if (err) return err;