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spi: sh-msiof: Fill in controller speed limits 

Fill in the controller speed limits, so the SPI core can use them for
validating SPI transfers, and adjust or reject transfers when needed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210113101916.1147695-3-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Geert Uytterhoeven 2021-01-13 11:19:16 +01:00 committed by Mark Brown
parent 9a133f7b72
commit 81f68479ec
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GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 0 deletions
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4
drivers/spi/spi-sh-msiof.c
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@ -1262,6 +1262,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
const struct sh_msiof_chipdata *chipdata;
struct sh_msiof_spi_info *info;
struct sh_msiof_spi_priv *p;
unsigned long clksrc;
int i;
int ret;
@ -1337,6 +1338,9 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
/* init controller code */
ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
ctlr->mode_bits |= SPI_LSB_FIRST | SPI_3WIRE;
clksrc = clk_get_rate(p->clk);
ctlr->min_speed_hz = DIV_ROUND_UP(clksrc, 1024);
ctlr->max_speed_hz = DIV_ROUND_UP(clksrc, 1 << p->min_div_pow);
ctlr->flags = chipdata->ctlr_flags;
ctlr->bus_num = pdev->id;
ctlr->num_chipselect = p->info->num_chipselect;