From 81f68479ec4ec91c0b0d7fb20db433be28e00497 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 13 Jan 2021 11:19:16 +0100 Subject: [PATCH] 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 Link: https://lore.kernel.org/r/20210113101916.1147695-3-geert+renesas@glider.be Signed-off-by: Mark Brown --- drivers/spi/spi-sh-msiof.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 90b8aba8a4fd..41ed9ff8fad0 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -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;