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mmc: mtk-sd: Limit getting top_base to SoCs that require it 

Currently the mtk-sd driver tries to get and map the second register
base, named top_base in the code, regardless of whether the SoC model
actually has it or not. This produces confusing big error messages on
the platforms that don't need it:

    mtk-msdc 11260000.mmc: error -EINVAL: invalid resource (null)

Limit it to the platforms that actually require it, based on their
device tree entries, and properly fail if it is missing.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Message-ID: <20241210073212.3917912-3-wenst@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chen-Yu Tsai 2024-12-10 15:32:11 +08:00 committed by Ulf Hansson
parent 6af057a8a5
commit 6ee5233a4c
1 changed files with 11 additions and 4 deletions
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15
drivers/mmc/host/mtk-sd.c
View File

@ -414,6 +414,7 @@ struct mtk_mmc_compatible {
u8 clk_div_bits;
bool recheck_sdio_irq;
bool hs400_tune; /* only used for MT8173 */
bool needs_top_base;
u32 pad_tune_reg;
bool async_fifo;
bool data_tune;
@ -587,6 +588,7 @@ static const struct mtk_mmc_compatible mt7986_compat = {
.clk_div_bits = 12,
.recheck_sdio_irq = true,
.hs400_tune = false,
.needs_top_base = true,
.pad_tune_reg = MSDC_PAD_TUNE0,
.async_fifo = true,
.data_tune = true,
@ -627,6 +629,7 @@ static const struct mtk_mmc_compatible mt8183_compat = {
.clk_div_bits = 12,
.recheck_sdio_irq = false,
.hs400_tune = false,
.needs_top_base = true,
.pad_tune_reg = MSDC_PAD_TUNE0,
.async_fifo = true,
.data_tune = true,
@ -653,6 +656,7 @@ static const struct mtk_mmc_compatible mt8196_compat = {
.clk_div_bits = 12,
.recheck_sdio_irq = false,
.hs400_tune = false,
.needs_top_base = true,
.pad_tune_reg = MSDC_PAD_TUNE0,
.async_fifo = true,
.data_tune = true,
@ -2887,9 +2891,13 @@ static int msdc_drv_probe(struct platform_device *pdev)
if (IS_ERR(host->base))
return PTR_ERR(host->base);
host->top_base = devm_platform_ioremap_resource(pdev, 1);
if (IS_ERR(host->top_base))
host->top_base = NULL;
host->dev_comp = of_device_get_match_data(&pdev->dev);
if (host->dev_comp->needs_top_base) {
host->top_base = devm_platform_ioremap_resource(pdev, 1);
if (IS_ERR(host->top_base))
return PTR_ERR(host->top_base);
}
ret = mmc_regulator_get_supply(mmc);
if (ret)
@ -2951,7 +2959,6 @@ static int msdc_drv_probe(struct platform_device *pdev)
msdc_of_property_parse(pdev, host);
host->dev = &pdev->dev;
host->dev_comp = of_device_get_match_data(&pdev->dev);
host->src_clk_freq = clk_get_rate(host->src_clk);
/* Set host parameters to mmc */
mmc->ops = &mt_msdc_ops;