Add snfi sample delay and read latency adjustment which can get from dts property. Signed-off-by: Xiangsheng Hou <xiangsheng.hou@xxxxxxxxxxxx> --- drivers/spi/spi-mtk-snfi.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/spi/spi-mtk-snfi.c b/drivers/spi/spi-mtk-snfi.c index 85644308df23..32a9a817869c 100644 --- a/drivers/spi/spi-mtk-snfi.c +++ b/drivers/spi/spi-mtk-snfi.c @@ -195,6 +195,8 @@ #define DATA_READ_MODE_X4 2 #define DATA_READ_MODE_DUAL 5 #define DATA_READ_MODE_QUAD 6 +#define DATA_READ_LATCH_LAT GENMASK(9, 8) +#define DATA_READ_LATCH_LAT_S 8 #define PG_LOAD_CUSTOM_EN BIT(7) #define DATARD_CUSTOM_EN BIT(6) #define CS_DESELECT_CYC_S 0 @@ -205,6 +207,9 @@ #define SNF_DLY_CTL3 0x548 #define SFCK_SAM_DLY_S 0 +#define SFCK_SAM_DLY GENMASK(5, 0) +#define SFCK_SAM_DLY_TOTAL 9 +#define SFCK_SAM_DLY_RANGE 47 #define SNF_STA_CTL1 0x550 #define CUS_PG_DONE BIT(28) @@ -1368,6 +1373,7 @@ static int mtk_snand_probe(struct platform_device *pdev) const struct of_device_id *dev_id; struct spi_controller *ctlr; struct mtk_snand *ms; + u32 val = 0; int ret; dev_id = of_match_node(mtk_snand_ids, np); @@ -1446,6 +1452,16 @@ static int mtk_snand_probe(struct platform_device *pdev) // switch to SNFI mode nfi_write32(ms, SNF_CFG, SPI_MODE); + ret = of_property_read_u32(np, "rx-sample-delay-ns", &val); + if (!ret) + nfi_rmw32(ms, SNF_DLY_CTL3, SFCK_SAM_DLY, + val * SFCK_SAM_DLY_RANGE / SFCK_SAM_DLY_TOTAL); + + ret = of_property_read_u32(np, "mediatek,rx-latch-latency", &val); + if (!ret) + nfi_rmw32(ms, SNF_MISC_CTL, DATA_READ_LATCH_LAT, + val << DATA_READ_LATCH_LAT_S); + // setup an initial page format for ops matching page_cache_op template // before ECC is called. ret = mtk_snand_setup_pagefmt(ms, SZ_2K, SZ_64); -- 2.25.1
