mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-04-09 14:45:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

spi: amlogic-spifc-a1: Support per spi-mem operation frequency switches

Browse Source 
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-v2-5-ad218dbc406f@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Miquel Raynal 2024-12-24 18:05:50 +01:00 committed by Mark Brown
parent e6204f39fe
commit 5baa189789
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/spi/spi-amlogic-spifc-a1.c
View File

@ -259,7 +259,7 @@ static int amlogic_spifc_a1_exec_op(struct spi_mem *mem,
size_t data_size = op->data.nbytes;
int ret;
ret = amlogic_spifc_a1_set_freq(spifc, mem->spi->max_speed_hz);
ret = amlogic_spifc_a1_set_freq(spifc, op->max_freq);
if (ret)
return ret;
@ -320,6 +320,10 @@ static const struct spi_controller_mem_ops amlogic_spifc_a1_mem_ops = {
.adjust_op_size = amlogic_spifc_a1_adjust_op_size,
};
static const struct spi_controller_mem_caps amlogic_spifc_a1_mem_caps = {
.per_op_freq = true,
};
static int amlogic_spifc_a1_probe(struct platform_device *pdev)
{
struct spi_controller *ctrl;
@ -356,6 +360,7 @@ static int amlogic_spifc_a1_probe(struct platform_device *pdev)
ctrl->bits_per_word_mask = SPI_BPW_MASK(8);
ctrl->auto_runtime_pm = true;
ctrl->mem_ops = &amlogic_spifc_a1_mem_ops;
ctrl->mem_caps = &amlogic_spifc_a1_mem_caps;
ctrl->min_speed_hz = SPIFC_A1_MIN_HZ;
ctrl->max_speed_hz = SPIFC_A1_MAX_HZ;
ctrl->mode_bits = (SPI_RX_DUAL | SPI_TX_DUAL |