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spi: mt65xx: Support per spi-mem operation frequency switches
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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.

Cc: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20241224-winbond-6-11-rc1-quad-support-v2-10-ad218dbc406f@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Miquel Raynal authored and Mark Brown committed Jan 9, 2025
1 parent 1352964 commit 13fd04b
Showing 1 changed file with 6 additions and 1 deletion.
7 changes: 6 additions & 1 deletion drivers/spi/spi-mt65xx.c
Original file line number Diff line number Diff line change
Expand Up @@ -961,7 +961,7 @@ static int mtk_spi_mem_exec_op(struct spi_mem *mem,

mtk_spi_reset(mdata);
mtk_spi_hw_init(mem->spi->controller, mem->spi);
mtk_spi_prepare_transfer(mem->spi->controller, mem->spi->max_speed_hz);
mtk_spi_prepare_transfer(mem->spi->controller, op->max_freq);

reg_val = readl(mdata->base + SPI_CFG3_IPM_REG);
/* opcode byte len */
Expand Down Expand Up @@ -1122,6 +1122,10 @@ static const struct spi_controller_mem_ops mtk_spi_mem_ops = {
.exec_op = mtk_spi_mem_exec_op,
};

static const struct spi_controller_mem_caps mtk_spi_mem_caps = {
.per_op_freq = true,
};

static int mtk_spi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
Expand Down Expand Up @@ -1160,6 +1164,7 @@ static int mtk_spi_probe(struct platform_device *pdev)
if (mdata->dev_comp->ipm_design) {
mdata->dev = dev;
host->mem_ops = &mtk_spi_mem_ops;
host->mem_caps = &mtk_spi_mem_caps;
init_completion(&mdata->spimem_done);
}

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