[PATCH] crypto: qce: Initialize core src clock @100Mhz

[Iaroslav Gridin]

Without that, QCE performance is about 2x less.

Signed-off-by: Iaroslav Gridin <voke...@gmail.com>
---
 drivers/crypto/qce/core.c | 18 +++++++++++++++++-
 drivers/crypto/qce/core.h |  2 +-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c
index 0cde513..657354c 100644
--- a/drivers/crypto/qce/core.c
+++ b/drivers/crypto/qce/core.c
@@ -193,6 +193,10 @@ static int qce_crypto_probe(struct platform_device *pdev)
        if (ret < 0)
                return ret;
 
+       qce->core_src = devm_clk_get(qce->dev, "core_src");
+       if (IS_ERR(qce->core_src))
+               return PTR_ERR(qce->core_src);
+
        qce->core = devm_clk_get(qce->dev, "core");
        if (IS_ERR(qce->core))
                return PTR_ERR(qce->core);
@@ -205,10 +209,20 @@ static int qce_crypto_probe(struct platform_device *pdev)
        if (IS_ERR(qce->bus))
                return PTR_ERR(qce->bus);
 
-       ret = clk_prepare_enable(qce->core);
+       ret = clk_prepare_enable(qce->core_src);
        if (ret)
                return ret;
 
+       ret = clk_set_rate(qce->core_src, 100000000);
+       if (ret) {
+               dev_warn(qce->dev, "Unable to set QCE core src clk @100Mhz, 
performance might be degraded\n");
+               goto err_clks_core_src;
+       }
+
+       ret = clk_prepare_enable(qce->core);
+       if (ret)
+               goto err_clks_core_src;
+
        ret = clk_prepare_enable(qce->iface);
        if (ret)
                goto err_clks_core;
@@ -247,6 +261,8 @@ err_clks_iface:
        clk_disable_unprepare(qce->iface);
 err_clks_core:
        clk_disable_unprepare(qce->core);
+err_clks_core_src:
+       clk_disable_unprepare(qce->core_src);
        return ret;
 }
 
diff --git a/drivers/crypto/qce/core.h b/drivers/crypto/qce/core.h
index 549965d..c5f8d08 100644
--- a/drivers/crypto/qce/core.h
+++ b/drivers/crypto/qce/core.h
@@ -42,7 +42,7 @@ struct qce_device {
        int result;
        void __iomem *base;
        struct device *dev;
-       struct clk *core, *iface, *bus;
+       struct clk *core, *iface, *bus, *core_src;
        struct qce_dma_data dma;
        int burst_size;
        unsigned int pipe_pair_id;
-- 
2.9.3

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