From e70ac288708c006251a80b7b69fc49423f19e454 Mon Sep 17 00:00:00 2001 From: Takahiro Kuwano Date: Fri, 22 Dec 2023 14:46:05 +0900 Subject: mtd: spi-nor-core: Rework spi_nor_cypress_octal_dtr_enable() Enabling Octal DTR mode in multi-die package parts requires reister setup for each die. That can be done by simple for-loop. write_enable() takes effect to all die at once so we can call it before the loop. Besides we can replace spi_mem_exec_op() calls with spansion_read/write_any_reg(). And finally, we must mask CFR2V[7:4] when changing dummy cycles, as CFR2V[7] indicates current addressing mode and that should be 1 (4-byte address mode) for multi-die package parts. Signed-off-by: Takahiro Kuwano Reviewed-by: Jagan Teki --- include/linux/mtd/spi-nor.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index 8a94e120372..d1dbf3eadbf 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -185,6 +185,7 @@ #define SPINOR_REG_CYPRESS_STR1V 0x00800000 #define SPINOR_REG_CYPRESS_CFR1V 0x00800002 #define SPINOR_REG_CYPRESS_CFR2V 0x00800003 +#define SPINOR_REG_CYPRESS_CFR2_MEMLAT_MASK GENMASK(3, 0) #define SPINOR_REG_CYPRESS_CFR2_MEMLAT_11_24 0xb #define SPINOR_REG_CYPRESS_CFR3V 0x00800004 #define SPINOR_REG_CYPRESS_CFR3_PGSZ BIT(4) /* Page size. */ -- cgit v1.2.3