Unverified Commit 13fd04b5 authored by Miquel Raynal's avatar Miquel Raynal Committed by Mark Brown
Browse files

spi: mt65xx: 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.

Cc: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: default avatarMiquel 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: default avatarMark Brown <broonie@kernel.org>
parent 13529647

drivers/spi/spi-mt65xx.c

+6 −1
Original line number Diff line number Diff line
@@ -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 */
@@ -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;
@@ -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);

	}