From 36b404a2260361ebd6abc7bf4a9f382c373f15ec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Fri, 12 Mar 2021 14:29:51 +0100 Subject: bmips: switch to upstream bcm2835-rng reset patch MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch has been accepted upstream. Signed-off-by: Álvaro Fernández Rojas --- ...indings-rng-bcm2835-add-clock-constraints.patch | 38 +++++++++++ ...ndings-rng-bcm2835-document-reset-support.patch | 51 ++++++++++++++ .../054-hwrng-bcm2835-add-reset-support.patch | 78 ++++++++++++++++++++++ .../207-hwrng-bcm2835-add-reset-support.patch | 74 -------------------- 4 files changed, 167 insertions(+), 74 deletions(-) create mode 100644 target/linux/bmips/patches-5.10/052-dt-bindings-rng-bcm2835-add-clock-constraints.patch create mode 100644 target/linux/bmips/patches-5.10/053-dt-bindings-rng-bcm2835-document-reset-support.patch create mode 100644 target/linux/bmips/patches-5.10/054-hwrng-bcm2835-add-reset-support.patch delete mode 100644 target/linux/bmips/patches-5.10/207-hwrng-bcm2835-add-reset-support.patch (limited to 'target/linux/bmips') diff --git a/target/linux/bmips/patches-5.10/052-dt-bindings-rng-bcm2835-add-clock-constraints.patch b/target/linux/bmips/patches-5.10/052-dt-bindings-rng-bcm2835-add-clock-constraints.patch new file mode 100644 index 0000000000..246293e384 --- /dev/null +++ b/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?= +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 +Reviewed-by: Rob Herring +Acked-by: Florian Fainelli +Signed-off-by: Herbert Xu +--- + .../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: diff --git a/target/linux/bmips/patches-5.10/053-dt-bindings-rng-bcm2835-document-reset-support.patch b/target/linux/bmips/patches-5.10/053-dt-bindings-rng-bcm2835-document-reset-support.patch new file mode 100644 index 0000000000..ce14a1037c --- /dev/null +++ b/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?= +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 +Reviewed-by: Rob Herring +Acked-by: Florian Fainelli +Signed-off-by: Herbert Xu +--- + .../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"; + }; diff --git a/target/linux/bmips/patches-5.10/054-hwrng-bcm2835-add-reset-support.patch b/target/linux/bmips/patches-5.10/054-hwrng-bcm2835-add-reset-support.patch new file mode 100644 index 0000000000..24b74817be --- /dev/null +++ b/target/linux/bmips/patches-5.10/054-hwrng-bcm2835-add-reset-support.patch @@ -0,0 +1,78 @@ +From e5f9f41d5e62004c913bfd4ddf06abe032f5ce1c Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= +Date: Fri, 5 Mar 2021 08:01:32 +0100 +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 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 +Copyright (c) 2004 by Henrique de Moraes Holschuh +This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +rngtest: starting FIPS tests... +rngtest: bits received from input: 20000032 +rngtest: FIPS 140-2 successes: 0 +rngtest: FIPS 140-2 failures: 1000 +rngtest: FIPS 140-2(2001-10-10) Monobit: 2 +rngtest: FIPS 140-2(2001-10-10) Poker: 1000 +rngtest: FIPS 140-2(2001-10-10) Runs: 1000 +rngtest: FIPS 140-2(2001-10-10) Long run: 30 +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 + +Signed-off-by: Álvaro Fernández Rojas +Reviewed-by: Philipp Zabel +Acked-by: Florian Fainelli +Signed-off-by: Herbert Xu +--- + drivers/char/hw_random/bcm2835-rng.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +--- a/drivers/char/hw_random/bcm2835-rng.c ++++ b/drivers/char/hw_random/bcm2835-rng.c +@@ -13,6 +13,7 @@ + #include + #include + #include ++#include + + #define RNG_CTRL 0x0 + #define RNG_STATUS 0x4 +@@ -32,6 +33,7 @@ struct bcm2835_rng_priv { + void __iomem *base; + bool mask_interrupts; + struct clk *clk; ++ struct reset_control *reset; + }; + + static inline struct bcm2835_rng_priv *to_rng_priv(struct hwrng *rng) +@@ -94,6 +96,10 @@ static int bcm2835_rng_init(struct hwrng + return ret; + } + ++ ret = reset_control_reset(priv->reset); ++ if (ret) ++ return ret; ++ + if (priv->mask_interrupts) { + /* mask the interrupt */ + val = rng_readl(priv, RNG_INT_MASK); +@@ -159,6 +165,10 @@ static int bcm2835_rng_probe(struct plat + if (PTR_ERR(priv->clk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + ++ priv->reset = devm_reset_control_get_optional_exclusive(dev, NULL); ++ if (IS_ERR(priv->reset)) ++ return PTR_ERR(priv->reset); ++ + priv->rng.name = pdev->name; + priv->rng.init = bcm2835_rng_init; + priv->rng.read = bcm2835_rng_read; diff --git a/target/linux/bmips/patches-5.10/207-hwrng-bcm2835-add-reset-support.patch b/target/linux/bmips/patches-5.10/207-hwrng-bcm2835-add-reset-support.patch deleted file mode 100644 index 1da0e952a8..0000000000 --- a/target/linux/bmips/patches-5.10/207-hwrng-bcm2835-add-reset-support.patch +++ /dev/null @@ -1,74 +0,0 @@ -From 846cd2c9eee7a99de29c743911cc047fdd56db02 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= -Date: Mon, 22 Feb 2021 20:41:04 +0100 -Subject: [PATCH] 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. -This is what BCM6368 produces without a reset: -root@OpenWrt:/# cat /dev/hwrng | rngtest -c 1000 -rngtest 6.10 -Copyright (c) 2004 by Henrique de Moraes Holschuh -This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - -rngtest: starting FIPS tests... -rngtest: bits received from input: 20000032 -rngtest: FIPS 140-2 successes: 0 -rngtest: FIPS 140-2 failures: 1000 -rngtest: FIPS 140-2(2001-10-10) Monobit: 2 -rngtest: FIPS 140-2(2001-10-10) Poker: 1000 -rngtest: FIPS 140-2(2001-10-10) Runs: 1000 -rngtest: FIPS 140-2(2001-10-10) Long run: 30 -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 ---- - drivers/char/hw_random/bcm2835-rng.c | 10 ++++++++++ - 1 file changed, 10 insertions(+) - ---- a/drivers/char/hw_random/bcm2835-rng.c -+++ b/drivers/char/hw_random/bcm2835-rng.c -@@ -13,6 +13,7 @@ - #include - #include - #include -+#include - - #define RNG_CTRL 0x0 - #define RNG_STATUS 0x4 -@@ -32,6 +33,7 @@ struct bcm2835_rng_priv { - void __iomem *base; - bool mask_interrupts; - struct clk *clk; -+ struct reset_control *reset; - }; - - static inline struct bcm2835_rng_priv *to_rng_priv(struct hwrng *rng) -@@ -94,6 +96,10 @@ static int bcm2835_rng_init(struct hwrng - return ret; - } - -+ ret = reset_control_reset(priv->reset); -+ if (ret) -+ return ret; -+ - if (priv->mask_interrupts) { - /* mask the interrupt */ - val = rng_readl(priv, RNG_INT_MASK); -@@ -159,6 +165,10 @@ static int bcm2835_rng_probe(struct plat - if (PTR_ERR(priv->clk) == -EPROBE_DEFER) - return -EPROBE_DEFER; - -+ priv->reset = devm_reset_control_get_optional_exclusive(dev, NULL); -+ if (IS_ERR(priv->reset)) -+ return PTR_ERR(priv->reset); -+ - priv->rng.name = pdev->name; - priv->rng.init = bcm2835_rng_init; - priv->rng.read = bcm2835_rng_read; -- cgit v1.2.3