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All other ops are capped to max_speed_hz, the always-reachable base rate. This places the policy at the single existing frequency-adjustment point so exec_op(), supports_op(), and calc_op_duration() all see consistent frequencies. Also extend spi_mem_default_supports_op() to require per_op_freq controller capability for post-config ops. A post-config op runs at a different clock rate than the pre-config base; a controller that cannot switch frequencies per-op cannot execute it correctly. Reviewed-by: Miquel Raynal Signed-off-by: Santhosh Kumar K --- drivers/spi/spi-mem.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index b94680b60af9..7916387a4f1d 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -206,7 +206,8 @@ bool spi_mem_default_supports_op(struct spi_mem *mem, return false; if (op->max_freq && - op->max_freq < mem->spi->max_speed_hz) { + (op->max_freq < mem->spi->max_speed_hz || + op->max_freq == mem->spi->post_config_max_speed_hz)) { if (!spi_mem_controller_is_capable(ctlr, per_op_freq)) return false; } @@ -627,9 +628,18 @@ EXPORT_SYMBOL_GPL(spi_mem_adjust_op_size); * Some chips have per-op frequency limitations and must adapt the maximum * speed. This function allows SPI mem drivers to set @op->max_freq to the * maximum supported value. + * + * When @mem->spi->post_config_max_speed_hz is set, ops with @op->max_freq + * equal to that value are treated as post-configuration ops (e.g. PHY-tuned) + * and are allowed to run at the full post-config rate. All other ops are + * capped to @mem->spi->max_speed_hz, the always-reachable base rate. */ void spi_mem_adjust_op_freq(struct spi_mem *mem, struct spi_mem_op *op) { + if (mem->spi->post_config_max_speed_hz && + op->max_freq == mem->spi->post_config_max_speed_hz) + return; + if (!op->max_freq || op->max_freq > mem->spi->max_speed_hz) op->max_freq = mem->spi->max_speed_hz; } -- 2.34.1