bmips: switch to upstream bcm2835-rng reset patch

This patch has been accepted upstream.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

target/linux/bmips/patches-5.10/052-dt-bindings-rng-bcm2835-add-clock-constraints.patch

@@ -0,0 +1,38 @@
+From 0618e07ea3e0981d7765b43d3f7db39e739842eb Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
+Date: Fri, 5 Mar 2021 08:01:30 +0100
+Subject: [PATCH 1/3] dt-bindings: rng: bcm2835: add clock constraints
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+brcm,bcm6368-rng controllers require enabling the IPSEC clock in order to get
+a functional RNG.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Acked-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+---
+ .../devicetree/bindings/rng/brcm,bcm2835.yaml          | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
++++ b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
+@@ -35,6 +35,16 @@ required:
+   - compatible
+   - reg
+ 
++if:
++  properties:
++    compatible:
++      enum:
++        - brcm,bcm6368-rng
++then:
++  required:
++    - clocks
++    - clock-names
++
+ additionalProperties: false
+ 
+ examples:

target/linux/bmips/patches-5.10/053-dt-bindings-rng-bcm2835-document-reset-support.patch

@@ -0,0 +1,51 @@
+From 381345820db55bf8e7289de047c24c00a2e3690d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
+Date: Fri, 5 Mar 2021 08:01:31 +0100
+Subject: [PATCH 2/3] dt-bindings: rng: bcm2835: document reset support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+brcm,bcm6368-rng controllers require resetting the IPSEC clock in order to get
+a functional RNG.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Acked-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+---
+ .../devicetree/bindings/rng/brcm,bcm2835.yaml         | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
++++ b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
+@@ -28,6 +28,12 @@ properties:
+   clock-names:
+     const: ipsec
+ 
++  resets:
++    maxItems: 1
++
++  reset-names:
++    const: ipsec
++
+   interrupts:
+     maxItems: 1
+ 
+@@ -44,6 +50,8 @@ then:
+   required:
+     - clocks
+     - clock-names
++    - resets
++    - reset-names
+ 
+ additionalProperties: false
+ 
+@@ -68,4 +76,7 @@ examples:
+ 
+         clocks = <&periph_clk 18>;
+         clock-names = "ipsec";
++
++        resets = <&periph_rst 4>;
++        reset-names = "ipsec";
+     };

target/linux/bmips/patches-5.10/054-hwrng-bcm2835-add-reset-support.patch

@@ -1,12 +1,14 @@
-From 846cd2c9eee7a99de29c743911cc047fdd56db02 Mon Sep 17 00:00:00 2001
+From e5f9f41d5e62004c913bfd4ddf06abe032f5ce1c Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Mon, 22 Feb 2021 20:41:04 +0100
+Date: Fri, 5 Mar 2021 08:01:32 +0100
-Subject: [PATCH] hwrng: bcm2835: add reset support
+Subject: [PATCH 3/3] hwrng: bcm2835 - add reset support
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
 
-BCM6368 devices need to reset the in order to generate true random numbers.
+BCM6368 devices need to reset the IPSEC controller in order to generate true
+random numbers.
+
 This is what BCM6368 produces without a reset:
 root@OpenWrt:/# cat /dev/hwrng | rngtest -c 1000
 rngtest 6.10
@@ -25,9 +27,11 @@ rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
 rngtest: input channel speed: (min=37.253; avg=320.827; max=635.783)Mibits/s
 rngtest: FIPS tests speed: (min=12.141; avg=15.034; max=16.428)Mibits/s
 rngtest: Program run time: 1336176 microseconds
-cat: write error: Broken pipe
 
 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
+Acked-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 ---
  drivers/char/hw_random/bcm2835-rng.c | 10 ++++++++++
  1 file changed, 10 insertions(+)