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Store the configured read op template in nor->max_read_op and pass it to spi_mem_execute_tuning(). On success the controller sets max_read_op.max_freq to the calibrated rate. spi_nor_spimem_get_read_op() propagates nor->max_read_op.max_freq into every op it returns, so the validated frequency flows automatically into the dirmap template and into regular read ops. Optimization failure is non-fatal; the device operates at the conservative base rate. Signed-off-by: Santhosh Kumar K --- drivers/mtd/spi-nor/core.c | 14 ++++++++++++++ include/linux/mtd/spi-nor.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index b683c077a233..2efcdc7f637f 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -216,6 +216,9 @@ static struct spi_mem_op spi_nor_spimem_get_read_op(struct spi_nor *nor) if (spi_nor_protocol_is_dtr(nor->read_proto)) op.dummy.nbytes *= 2; + /* Propagate the validated frequency; zero before tuning. */ + op.max_freq = nor->max_read_op.max_freq; + return op; } @@ -3843,6 +3846,17 @@ static int spi_nor_probe(struct spi_mem *spimem) return -ENOMEM; } + /* + * Populate the persistent template and run PHY tuning before dirmap + * creation so the validated frequency feeds into the dirmap op. + * Tuning failure is non-fatal; the device operates at base speed. + */ + nor->max_read_op = spi_nor_spimem_get_read_op(nor); + + ret = spi_mem_execute_tuning(spimem, &nor->max_read_op, NULL); + if (ret && ret != -EOPNOTSUPP) + dev_dbg(dev, "Controller optimization failed: %d\n", ret); + ret = spi_nor_create_read_dirmap(nor); if (ret) return ret; diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index 4b92494827b1..ab498a50f15f 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -422,6 +422,9 @@ struct spi_nor { struct spi_mem_dirmap_desc *wdesc; } dirmap; + /* Persistent op template updated by execute_tuning with validated speed. */ + struct spi_mem_op max_read_op; + void *priv; }; -- 2.34.1