The RK3568 clock driver initializes ACLK_BUS to 150 MHz when probed in
SPL. However, the driver is only probed on demand, so this
initialization is skipped when no SPL consumer requests a clock, e.g.
when booting from RAM/USB.
Prior to the commit c6bba31dbdd4 ("rockchip: spl-boot-order: Defer probe
of boot device") all boot devices where typically probed, with a side
effect that clock driver likely also where probed, prior to the
boot_from_devices() call.
Flag the clock driver to be probed after bind in SPL to help ensure a
deterministic probe and clock initialization behavior prior to booting
from devices.
Signed-off-by: Jonas Karlman <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
---
Changes in v2:
- Update commit message
- Collect r-b tag
---
drivers/clk/rockchip/clk_rk3568.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/clk/rockchip/clk_rk3568.c
b/drivers/clk/rockchip/clk_rk3568.c
index 9f3e9322161e..5a05f1b4de00 100644
--- a/drivers/clk/rockchip/clk_rk3568.c
+++ b/drivers/clk/rockchip/clk_rk3568.c
@@ -2934,6 +2934,10 @@ static int rk3568_clk_bind(struct udevice *dev)
struct udevice *sys_child;
struct sysreset_reg *priv;
+ /* Ensure clocks are initialized after bind in SPL build */
+ if (IS_ENABLED(CONFIG_SPL_BUILD))
+ dev_or_flags(dev, DM_FLAG_PROBE_AFTER_BIND);
+
/* The reset driver does not have a device node, so bind it here */
ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
&sys_child);
--
2.55.0
