<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">From 7b438d0377fbd520b475a68bdd9de1692393f22d Mon Sep 17 00:00:00 2001
From: Mengqi Zhang &lt;mengqi.zhang@mediatek.com&gt;
Date: Sun, 6 Nov 2022 11:39:24 +0800
Subject: [PATCH 2/6] mmc: mtk-sd: add Inline Crypto Engine clock control

Add crypto clock control and ungate it before CQHCI init.

Signed-off-by: Mengqi Zhang &lt;mengqi.zhang@mediatek.com&gt;
Reviewed-by: AngeloGioacchino Del Regno &lt;angelogioacchino.delregno@collabora.com&gt;
Link: https://lore.kernel.org/r/20221106033924.9854-2-mengqi.zhang@mediatek.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
---
 drivers/mmc/host/mtk-sd.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

--- 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
 static void msdc_gate_clock(struct msdc_host *host)
 {
 	clk_bulk_disable_unprepare(MSDC_NR_CLOCKS, host-&gt;bulk_clks);
+	clk_disable_unprepare(host-&gt;crypto_clk);
 	clk_disable_unprepare(host-&gt;src_clk_cg);
 	clk_disable_unprepare(host-&gt;src_clk);
 	clk_disable_unprepare(host-&gt;bus_clk);
@@ -855,6 +857,7 @@ static int msdc_ungate_clock(struct msdc
 	clk_prepare_enable(host-&gt;bus_clk);
 	clk_prepare_enable(host-&gt;src_clk);
 	clk_prepare_enable(host-&gt;src_clk_cg);
+	clk_prepare_enable(host-&gt;crypto_clk);
 	ret = clk_bulk_prepare_enable(MSDC_NR_CLOCKS, host-&gt;bulk_clks);
 	if (ret) {
 		dev_err(host-&gt;dev, "Cannot enable pclk/axi/ahb clock gates\n");
@@ -2670,6 +2673,15 @@ static int msdc_drv_probe(struct platfor
 		goto host_free;
 	}
 
+	/* only eMMC has crypto property */
+	if (!(mmc-&gt;caps2 &amp; MMC_CAP2_NO_MMC)) {
+		host-&gt;crypto_clk = devm_clk_get_optional(&amp;pdev-&gt;dev, "crypto");
+		if (IS_ERR(host-&gt;crypto_clk))
+			host-&gt;crypto_clk = NULL;
+		else
+			mmc-&gt;caps2 |= MMC_CAP2_CRYPTO;
+	}
+
 	host-&gt;irq = platform_get_irq(pdev, 0);
 	if (host-&gt;irq &lt; 0) {
 		ret = host-&gt;irq;
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