From b242e30661dac5c1c127999600029cd5b3f6b458 Mon Sep 17 00:00:00 2001 From: "SkyLake.Huang" Date: Thu, 23 Jun 2022 18:40:59 +0800 Subject: [PATCH] drivers: mtd: spi-nor: Add calibration support for spi-nor Signed-off-by: SkyLake.Huang --- drivers/mtd/spi-nor/spi-nor.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 945833cbb..38a8948b3 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -4893,6 +4893,20 @@ static void spi_nor_debugfs_init(struct spi_nor *nor, info->id_len, info->id); } +static int spi_nor_cal_read(void *priv, u32 *addr, int addrlen, u8 *buf, int readlen) +{ + int ret; + struct spi_nor *nor = (struct spi_nor *)priv; + + nor->reg_proto = SNOR_PROTO_1_1_1; + nor->read_proto = SNOR_PROTO_1_1_1; + nor->read_opcode = SPINOR_OP_READ; + nor->addr_width = 3; + nor->read_dummy = 0; + + return spi_nor_read_raw(nor, *addr, readlen, buf); +} + static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor, const char *name) { @@ -4967,6 +4981,9 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, if (!nor->bouncebuf) return -ENOMEM; + if(nor->spimem) + spi_mem_do_calibration(nor->spimem, spi_nor_cal_read, nor); + info = spi_nor_get_flash_info(nor, name); if (IS_ERR(info)) return PTR_ERR(info); -- 2.18.0