rockchip: board: Add board_rng_seed() for all Rockchip devices

Allow all rockchip devices to use the hardware RNG to seed Linux
RNG.

Signed-off-by: Chris Morgan <[email protected]>
Reviewed-by: Kever Yang <[email protected]>

1 files changed, 0 insertions, 29 deletions

diff --git a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
index 3d0c6146233..3ff2e9493f9 100644
--- a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
+++ b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
@@ -16,7 +16,6 @@
 #include <mmc.h>
 #include <panel.h>
 #include <pwm.h>
-#include <rng.h>
 #include <stdlib.h>
 #include <video_bridge.h>
 
@@ -133,34 +132,6 @@ void spl_board_init(void)
 	       (GPIO0_BASE + GPIO_SWPORT_DR_H));
 }
 
-/* Use hardware rng to seed Linux random. */
-int board_rng_seed(struct abuf *buf)
-{
-	struct udevice *dev;
-	size_t len = 0x8;
-	u64 *data;
-
-	data = malloc(len);
-	if (!data) {
-		printf("Out of memory\n");
-		return -ENOMEM;
-	}
-
-	if (uclass_get_device(UCLASS_RNG, 0, &dev) || !dev) {
-		printf("No RNG device\n");
-		return -ENODEV;
-	}
-
-	if (dm_rng_read(dev, data, len)) {
-		printf("Reading RNG failed\n");
-		return -EIO;
-	}
-
-	abuf_init_set(buf, data, len);
-
-	return 0;
-}
-
 /*
  * Buzz the buzzer so the user knows something is going on. Make it
  * optional in case PWM is disabled.