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spi: nxp-fspi: Support per spi-mem operation frequency switches

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[ Upstream commit 26851cf65ffca2d3a8d529a125e54cf0084d69e7 ]

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: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20241224-winbond-6-11-rc1-quad-support-v2-12-ad218dbc406f@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 40ad64ac25bb ("spi: nxp-fspi: Propagate fwnode in ACPI case as well")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Miquel Raynal
2024-12-24 18:05:57 +01:00
committed by Greg Kroah-Hartman
parent a25cc746f7
commit 5fc6f8175b
1 changed files with 9 additions and 3 deletions
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12
drivers/spi/spi-nxp-fspi.c
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@@ -711,9 +711,10 @@ static void nxp_fspi_dll_calibration(struct nxp_fspi *f)
* Value for rest of the CS FLSHxxCR0 register would be zero.
*
*/
static void nxp_fspi_select_mem(struct nxp_fspi *f, struct spi_device *spi)
static void nxp_fspi_select_mem(struct nxp_fspi *f, struct spi_device *spi,
const struct spi_mem_op *op)
{
unsigned long rate = spi->max_speed_hz;
unsigned long rate = op->max_freq;
int ret;
uint64_t size_kb;
@@ -938,7 +939,7 @@ static int nxp_fspi_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
FSPI_STS0_ARB_IDLE, 1, POLL_TOUT, true);
WARN_ON(err);
nxp_fspi_select_mem(f, mem->spi);
nxp_fspi_select_mem(f, mem->spi, op);
nxp_fspi_prepare_lut(f, op);
/*
@@ -1156,6 +1157,10 @@ static const struct spi_controller_mem_ops nxp_fspi_mem_ops = {
.get_name = nxp_fspi_get_name,
};
static const struct spi_controller_mem_caps nxp_fspi_mem_caps = {
.per_op_freq = true,
};
static int nxp_fspi_probe(struct platform_device *pdev)
{
struct spi_controller *ctlr;
@@ -1253,6 +1258,7 @@ static int nxp_fspi_probe(struct platform_device *pdev)
ctlr->bus_num = -1;
ctlr->num_chipselect = NXP_FSPI_MAX_CHIPSELECT;
ctlr->mem_ops = &nxp_fspi_mem_ops;
ctlr->mem_caps = &nxp_fspi_mem_caps;
nxp_fspi_default_setup(f);