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bcm27xx: enable bcm2711 HW RNG 

Also add a patch setting its quality, which should make it usable by khwrngd.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2021-02-20 19:53:50 +01:00
parent 7747b3fa36
commit 670526efa3
3 changed files with 27 additions and 0 deletions
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1
target/linux/bcm27xx/bcm2709/config-5.4
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@ -246,6 +246,7 @@ CONFIG_HOTPLUG_CPU=y
CONFIG_HW_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_BCM2835=y
CONFIG_HW_RANDOM_IPROC_RNG200=y
CONFIG_HZ=100
CONFIG_HZ_100=y
CONFIG_HZ_FIXED=0

1
target/linux/bcm27xx/bcm2711/config-5.4
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@ -258,6 +258,7 @@ CONFIG_HOTPLUG_CPU=y
CONFIG_HW_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_BCM2835=y
CONFIG_HW_RANDOM_IPROC_RNG200=y
CONFIG_HZ=250
CONFIG_HZ_250=y
CONFIG_I2C=y

25
target/linux/bcm27xx/patches-5.4/960-hwrng-iproc-set-quality-to-1000.patch Normal file
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@ -0,0 +1,25 @@
From d3e5e7f3a4e6f61e8c380b9a610212267ee72dbd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 20 Feb 2021 19:24:50 +0100
Subject: [PATCH] hwrng: iproc: set quality to 1000
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This allows khwrngd to make use of iproc-rng200.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
drivers/char/hw_random/iproc-rng200.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/char/hw_random/iproc-rng200.c
+++ b/drivers/char/hw_random/iproc-rng200.c
@@ -270,6 +270,7 @@ static int iproc_rng200_probe(struct pla
priv->rng.name = pdev->name;
priv->rng.cleanup = iproc_rng200_cleanup;
+ priv->rng.quality = 1000;
if (of_device_is_compatible(dev->of_node, "brcm,bcm2711-rng200")) {
priv->rng.init = bcm2711_rng200_init;