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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Kevin Hilman <khilman@baylibre.com>,
        Tony Lindgren <tony@atomide.com>
Subject: [PATCH 5.10 106/135] bus: ti-sysc: AM3: RNG is GP only
Date:   Tue, 10 Aug 2021 19:30:40 +0200
Message-Id: <20210810172959.364408559@linuxfoundation.org>
In-Reply-To: <20210810172955.660225700@linuxfoundation.org>
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From: Kevin Hilman <khilman@baylibre.com>

commit a6d90e9f22328f07343e49e08a4ca483ae8e8abb upstream.

Make the RNG on AM3 GP only.

Based on this patch from TI v5.4 tree which is based on hwmod data
which are now removed:

| ARM: AM43xx: hwmod: Move RNG to a GP only links table
|
| On non-GP devices the RNG is controlled by the secure-side software,
| like in DRA7xx hwmod we should not control this IP when we are not
| a GP device.
|
| Signed-off-by: Andrew F. Davis <afd@ti.com>

Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/bus/ti-sysc.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -2920,6 +2920,8 @@ static int sysc_init_soc(struct sysc *dd
 		case SOC_3430 ... SOC_3630:
 			sysc_add_disabled(0x48304000);	/* timer12 */
 			break;
+		case SOC_AM3:
+			sysc_add_disabled(0x48310000);  /* rng */
 		default:
 			break;
 		};