rng: iproc_rng200: Enable support for RPi4 armv7

On the RPi4 armv7 build we have the situationt that we use physical
addresses of 64 bit, while the virtual addresses are 32 bit.
Remap the base address in this scenario via map_physmem().

Signed-off-by: Matthias Brugger <mbrugger@suse.com>

diff --git a/drivers/rng/iproc_rng200.c b/drivers/rng/iproc_rng200.c
index 1126bbd..85ac15b 100644 (file)
--- a/drivers/rng/iproc_rng200.c
+++ b/drivers/rng/iproc_rng200.c
@@ -34,12 +34,12 @@
 #define RNG_FIFO_COUNT_RNG_FIFO_COUNT_MASK             0x000000FF
 
 struct iproc_rng200_plat {
-       fdt_addr_t base;
+       void __iomem *base;
 };
 
 static void iproc_rng200_enable(struct iproc_rng200_plat *pdata, bool enable)
 {
-       fdt_addr_t rng_base = pdata->base;
+       void __iomem *rng_base = pdata->base;
        u32 val;
 
        val = readl(rng_base + RNG_CTRL_OFFSET);
@@ -54,7 +54,7 @@ static void iproc_rng200_enable(struct iproc_rng200_plat *pdata, bool enable)
 
 static void iproc_rng200_restart(struct iproc_rng200_plat *pdata)
 {
-       fdt_addr_t rng_base = pdata->base;
+       void __iomem *rng_base = pdata->base;
        u32 val;
 
        iproc_rng200_enable(pdata, false);
@@ -156,7 +156,7 @@ static int iproc_rng200_of_to_plat(struct udevice *dev)
 {
        struct iproc_rng200_plat *pdata = dev_get_plat(dev);
 
-       pdata->base = dev_read_addr(dev);
+       pdata->base = devfdt_map_physmem(dev, sizeof(void *));
        if (!pdata->base)
                return -ENODEV;