[PATCH v11 8/8] net: phy: qt2025: Wait until PHY becomes ready

FUJITA Tomonori
2025-02-20T07:11:16Z

Wait until a PHY becomes ready in the probe callback by
using read_poll_timeout function.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
---
drivers/net/phy/qt2025.rs | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/qt2025.rs b/drivers/net/phy/qt2025.rs
index 1ab065798175..cdf0540f0a98 100644
--- a/drivers/net/phy/qt2025.rs
+++ b/drivers/net/phy/qt2025.rs
@@ -12,6 +12,7 @@
use kernel::c_str;
use kernel::error::code;
use kernel::firmware::Firmware;
+use kernel::io::poll::read_poll_timeout;
use kernel::net::phy::{
self,
reg::{Mmd, C45},
@@ -19,6 +20,7 @@
};
use kernel::prelude::*;
use kernel::sizes::{SZ_16K, SZ_8K};
+use kernel::time::Delta;

kernel::module_phy_driver! {
drivers: [PhyQT2025],
@@ -93,7 +95,13 @@ fn probe(dev: &mut phy::Device) -> Result<()> {
// The micro-controller will start running from SRAM.
dev.write(C45::new(Mmd::PCS, 0xe854), 0x0040)?;

- // TODO: sleep here until the hw becomes ready.
+ read_poll_timeout(
+ || dev.read(C45::new(Mmd::PCS, 0xd7fd)),
+ |val| *val != 0x00 && *val != 0x10,
+ Delta::from_millis(50),
+ Some(Delta::from_secs(3)),
+ )?;
+
Ok(())
}

--
2.43.0