1 From f1da27b7c4191f78ed81d3dabf64c769f896296c Mon Sep 17 00:00:00 2001
2 From: "Mingming.Su" <Mingming.Su@mediatek.com>
3 Date: Sat, 8 Oct 2022 18:45:53 +0200
4 Subject: [PATCH] hwrng: mtk - add mt7986 support
6 1. Add trng compatible name for MT7986
7 2. Fix mtk_rng_wait_ready() function
9 Signed-off-by: Mingming.Su <Mingming.Su@mediatek.com>
10 Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
11 Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
13 drivers/char/hw_random/mtk-rng.c | 5 +++--
14 1 file changed, 3 insertions(+), 2 deletions(-)
16 --- a/drivers/char/hw_random/mtk-rng.c
17 +++ b/drivers/char/hw_random/mtk-rng.c
19 #define RNG_AUTOSUSPEND_TIMEOUT 100
22 -#define TIMEOUT_POLL 20
23 +#define TIMEOUT_POLL 60
27 @@ -77,7 +77,7 @@ static bool mtk_rng_wait_ready(struct hw
28 readl_poll_timeout_atomic(priv->base + RNG_CTRL, ready,
29 ready & RNG_READY, USEC_POLL,
32 + return !!(ready & RNG_READY);
35 static int mtk_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
36 @@ -179,6 +179,7 @@ static const struct dev_pm_ops mtk_rng_p
37 #endif /* CONFIG_PM */
39 static const struct of_device_id mtk_rng_match[] = {
40 + { .compatible = "mediatek,mt7986-rng" },
41 { .compatible = "mediatek,mt7623-rng" },