diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2024-12-24 18:05:52 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-01-09 20:16:28 +0000 |
| commit | eee7bc9e7ade6f7ac17d9ec02887cd5509ba9427 (patch) | |
| tree | 403a1a142ad7144fae4cba4af783a98bac77d007 /drivers/spi/spi-dw-core.c | |
| parent | 06e9f5a1f6ba774d8942a168d3ec5ed5a008fbcb (diff) | |
spi: dw: Support per spi-mem operation frequency switches
Every ->exec_op() call correctly configures the spi bus speed to the
maximum allowed frequency for the memory using the constant spi default
parameter. Since we can now have per-operation constraints, let's use
the value that comes from the spi-mem operation structure instead. In
case there is no specific limitation for this operation, the default spi
device value will be given anyway.
The per-operation frequency capability is thus advertised to the spi-mem
core.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20241224-winbond-6-11-rc1-quad-support-v2-7-ad218dbc406f@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw-core.c')
| -rw-r--r-- | drivers/spi/spi-dw-core.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c index ea517af9435f..941ecc6f59f8 100644 --- a/drivers/spi/spi-dw-core.c +++ b/drivers/spi/spi-dw-core.c @@ -677,7 +677,7 @@ static int dw_spi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op) * operation. Transmit-only mode is suitable for the rest of them. */ cfg.dfs = 8; - cfg.freq = clamp(mem->spi->max_speed_hz, 0U, dws->max_mem_freq); + cfg.freq = clamp(op->max_freq, 0U, dws->max_mem_freq); if (op->data.dir == SPI_MEM_DATA_IN) { cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD; cfg.ndf = op->data.nbytes; @@ -894,6 +894,10 @@ static void dw_spi_hw_init(struct device *dev, struct dw_spi *dws) dw_writel(dws, DW_SPI_CS_OVERRIDE, 0xF); } +static const struct spi_controller_mem_caps dw_spi_mem_caps = { + .per_op_freq = true, +}; + int dw_spi_add_host(struct device *dev, struct dw_spi *dws) { struct spi_controller *host; @@ -941,8 +945,10 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) host->set_cs = dw_spi_set_cs; host->transfer_one = dw_spi_transfer_one; host->handle_err = dw_spi_handle_err; - if (dws->mem_ops.exec_op) + if (dws->mem_ops.exec_op) { host->mem_ops = &dws->mem_ops; + host->mem_caps = &dw_spi_mem_caps; + } host->max_speed_hz = dws->max_freq; host->flags = SPI_CONTROLLER_GPIO_SS; host->auto_runtime_pm = true; |