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spi: sh-msiof: Enforce fixed DTDL for R-Car H3

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Documentation says only DTDL of 200 is allowed for this SoC.

Fixes: 4286db8456 ("spi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://msgid.link/r/20231212081239.14254-1-wsa+renesas@sang-engineering.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Wolfram Sang 2023-12-12 09:12:38 +01:00 committed by Mark Brown
parent 0d7096c1dd
commit e5c7bcb499
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GPG Key ID: 24D68B725D5487D0
1 changed files with 17 additions and 0 deletions
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17
drivers/spi/spi-sh-msiof.c
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@ -29,12 +29,15 @@
#include <asm/unaligned.h> #include <asm/unaligned.h>
#define SH_MSIOF_FLAG_FIXED_DTDL_200 BIT(0)
struct sh_msiof_chipdata { struct sh_msiof_chipdata {
u32 bits_per_word_mask; u32 bits_per_word_mask;
u16 tx_fifo_size; u16 tx_fifo_size;
u16 rx_fifo_size; u16 rx_fifo_size;
u16 ctlr_flags; u16 ctlr_flags;
u16 min_div_pow; u16 min_div_pow;
u32 flags;
}; };
struct sh_msiof_spi_priv { struct sh_msiof_spi_priv {
@ -1072,6 +1075,16 @@ static const struct sh_msiof_chipdata rcar_gen3_data = {
.min_div_pow = 1, .min_div_pow = 1,
}; };
static const struct sh_msiof_chipdata rcar_r8a7795_data = {
.bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
SPI_BPW_MASK(24) | SPI_BPW_MASK(32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = SPI_CONTROLLER_MUST_TX,
.min_div_pow = 1,
.flags = SH_MSIOF_FLAG_FIXED_DTDL_200,
};
static const struct of_device_id sh_msiof_match[] __maybe_unused = { static const struct of_device_id sh_msiof_match[] __maybe_unused = {
{ .compatible = "renesas,sh-mobile-msiof", .data = &sh_data }, { .compatible = "renesas,sh-mobile-msiof", .data = &sh_data },
{ .compatible = "renesas,msiof-r8a7743", .data = &rcar_gen2_data }, { .compatible = "renesas,msiof-r8a7743", .data = &rcar_gen2_data },
@ -1082,6 +1095,7 @@ static const struct of_device_id sh_msiof_match[] __maybe_unused = {
{ .compatible = "renesas,msiof-r8a7793", .data = &rcar_gen2_data }, { .compatible = "renesas,msiof-r8a7793", .data = &rcar_gen2_data },
{ .compatible = "renesas,msiof-r8a7794", .data = &rcar_gen2_data }, { .compatible = "renesas,msiof-r8a7794", .data = &rcar_gen2_data },
{ .compatible = "renesas,rcar-gen2-msiof", .data = &rcar_gen2_data }, { .compatible = "renesas,rcar-gen2-msiof", .data = &rcar_gen2_data },
{ .compatible = "renesas,msiof-r8a7795", .data = &rcar_r8a7795_data },
{ .compatible = "renesas,msiof-r8a7796", .data = &rcar_gen3_data }, { .compatible = "renesas,msiof-r8a7796", .data = &rcar_gen3_data },
{ .compatible = "renesas,rcar-gen3-msiof", .data = &rcar_gen3_data }, { .compatible = "renesas,rcar-gen3-msiof", .data = &rcar_gen3_data },
{ .compatible = "renesas,rcar-gen4-msiof", .data = &rcar_gen3_data }, { .compatible = "renesas,rcar-gen4-msiof", .data = &rcar_gen3_data },
@ -1279,6 +1293,9 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
return -ENXIO; return -ENXIO;
} }
if (chipdata->flags & SH_MSIOF_FLAG_FIXED_DTDL_200)
info->dtdl = 200;
if (info->mode == MSIOF_SPI_TARGET) if (info->mode == MSIOF_SPI_TARGET)
ctlr = spi_alloc_target(&pdev->dev, ctlr = spi_alloc_target(&pdev->dev,
sizeof(struct sh_msiof_spi_priv)); sizeof(struct sh_msiof_spi_priv));