hwrng: iproc-rng200 - Add support for BCM7278

BCM7278 features a RNG200 hardware random number generator block, add
support for this chip by matching the chip-specific compatible string
and extending the Kconfig dependencies to allow building on ARCH_BRCMSTB
(base platform for 7278).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 4 insertions, 3 deletions

diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index 95a031e9eced..f6e3e5abc117 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -100,12 +100,12 @@ config HW_RANDOM_BCM2835
           If unsure, say Y.
 
 config HW_RANDOM_IPROC_RNG200
-        tristate "Broadcom iProc RNG200 support"
-        depends on ARCH_BCM_IPROC
+        tristate "Broadcom iProc/STB RNG200 support"
+        depends on ARCH_BCM_IPROC || ARCH_BRCMSTB
         default HW_RANDOM
         ---help---
           This driver provides kernel-side support for the RNG200
-          hardware found on the Broadcom iProc SoCs.
+          hardware found on the Broadcom iProc and STB SoCs.
 
           To compile this driver as a module, choose M here: the
           module will be called iproc-rng200
diff --git a/drivers/char/hw_random/iproc-rng200.c b/drivers/char/hw_random/iproc-rng200.c
index 3eaf7cb96d36..8b5a20b35293 100644
--- a/drivers/char/hw_random/iproc-rng200.c
+++ b/drivers/char/hw_random/iproc-rng200.c
@@ -220,6 +220,7 @@ static int iproc_rng200_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id iproc_rng200_of_match[] = {
+        { .compatible = "brcm,bcm7278-rng200", },
         { .compatible = "brcm,iproc-rng200", },
         {},
 };