Add crypto clock control and ungate it before CQHCI init.
Signed-off-by: Mengqi Zhang <mengqi.zhang@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
drivers/mmc/host/mtk-sd.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 3f7f3a1e0df8..652a67f9b054 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -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");
@@ -2672,6 +2675,15 @@ 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;
--
2.25.1
