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mmc: mtk-sd: add Inline Crypto Engine clock control

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Add crypto clock control and ungate it before CQHCI init.

Signed-off-by: Mengqi Zhang <mengqi.zhang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221106033924.9854-2-mengqi.zhang@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Mengqi Zhang 2022-11-06 11:39:24 +08:00 committed by Ulf Hansson
parent 5c133688a1
commit 7b438d0377
1 changed files with 12 additions and 0 deletions
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12
drivers/mmc/host/mtk-sd.c
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@ -452,6 +452,7 @@ struct msdc_host {
struct clk *bus_clk; /* bus clock which used to access register */
struct clk *src_clk_cg; /* msdc source clock control gate */
struct clk *sys_clk_cg; /* msdc subsys clock control gate */
struct clk *crypto_clk; /* msdc crypto clock control gate */
struct clk_bulk_data bulk_clks[MSDC_NR_CLOCKS];
u32 mclk; /* mmc subsystem clock frequency */
u32 src_clk_freq; /* source clock frequency */
@ -840,6 +841,7 @@ static void msdc_set_busy_timeout(struct msdc_host *host, u64 ns, u64 clks)
static void msdc_gate_clock(struct msdc_host *host)
{
clk_bulk_disable_unprepare(MSDC_NR_CLOCKS, host->bulk_clks);
clk_disable_unprepare(host->crypto_clk);
clk_disable_unprepare(host->src_clk_cg);
clk_disable_unprepare(host->src_clk);
clk_disable_unprepare(host->bus_clk);
@ -855,6 +857,7 @@ static int msdc_ungate_clock(struct msdc_host *host)
clk_prepare_enable(host->bus_clk);
clk_prepare_enable(host->src_clk);
clk_prepare_enable(host->src_clk_cg);
clk_prepare_enable(host->crypto_clk);
ret = clk_bulk_prepare_enable(MSDC_NR_CLOCKS, host->bulk_clks);
if (ret) {
dev_err(host->dev, "Cannot enable pclk/axi/ahb clock gates\n");
@ -2670,6 +2673,15 @@ static int msdc_drv_probe(struct platform_device *pdev)
goto host_free;
}
/* only eMMC has crypto property */
if (!(mmc->caps2 & MMC_CAP2_NO_MMC)) {
host->crypto_clk = devm_clk_get_optional(&pdev->dev, "crypto");
if (IS_ERR(host->crypto_clk))
host->crypto_clk = NULL;
else
mmc->caps2 |= MMC_CAP2_CRYPTO;
}
host->irq = platform_get_irq(pdev, 0);
if (host->irq < 0) {
ret = -EINVAL;