Re: [PATCH v2] PCI: imx6: Fix i.MX6Q/DL boot hang by separating PHY power and reference clock control

[sashiko-bot@kernel.org]

> From: Richard Zhu <hongxing.zhu@nxp.com>
> 
> Commit 610fa91d9863 ("PCI: imx6: Assert PERST# before enabling regulators")
> introduced a boot hang on i.MX6Q/DL variants by changing the initialization
> sequence.
> 
> The issue stems from coupling PHY power (TEST_PD) and reference clock
> (REF_CLK_EN) control in imx6q_pcie_enable_ref_clk(). When these are
> managed together, the timing between PHY power-up and reference clock
> enablement cannot be properly controlled, leading to initialization
> failures.
> 
> Fix this by separating the two concerns:
> 
> - Move PHY power control (TEST_PD) to imx6q_pcie_core_reset() where it
> [ ... ]
> This refactoring ensures PHY power is controlled during reset
> operations, fixing the boot hang while improving code maintainability.
> 
> Fixes: 610fa91d9863 ("PCI: imx6: Assert PERST# before enabling regulators")
> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260708035928.580236-2-hongxing.zhu@oss.nxp.com?part=1