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42 lines
1.2 KiB
Diff
42 lines
1.2 KiB
Diff
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From f6ba5e17bee38f8ffe118c47fbfef3cf90eb87ff Mon Sep 17 00:00:00 2001
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From: "Mingming.Su" <Mingming.Su@mediatek.com>
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Date: Wed, 30 Jun 2021 16:59:32 +0800
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Subject: [PATCH] mt7986: trng: add rng support
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1. Add trng compatible name for MT7986
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2. Fix mtk_rng_wait_ready() function
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Signed-off-by: Mingming.Su <Mingming.Su@mediatek.com>
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---
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drivers/char/hw_random/mtk-rng.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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--- a/drivers/char/hw_random/mtk-rng.c
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+++ b/drivers/char/hw_random/mtk-rng.c
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@@ -22,7 +22,7 @@
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#define RNG_AUTOSUSPEND_TIMEOUT 100
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#define USEC_POLL 2
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-#define TIMEOUT_POLL 20
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+#define TIMEOUT_POLL 60
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#define RNG_CTRL 0x00
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#define RNG_EN BIT(0)
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@@ -77,7 +77,7 @@ static bool mtk_rng_wait_ready(struct hw
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readl_poll_timeout_atomic(priv->base + RNG_CTRL, ready,
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ready & RNG_READY, USEC_POLL,
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TIMEOUT_POLL);
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- return !!ready;
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+ return !!(ready & RNG_READY);
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}
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static int mtk_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
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@@ -179,6 +179,7 @@ static const struct dev_pm_ops mtk_rng_p
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#endif /* CONFIG_PM */
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static const struct of_device_id mtk_rng_match[] = {
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+ { .compatible = "mediatek,mt7986-rng" },
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{ .compatible = "mediatek,mt7623-rng" },
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{},
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};
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