]> www.infradead.org Git - users/jedix/linux-maple.git/commit
clk: qcom: ipq9574: Update the alpha PLL type for GPLLs
authordevi priya <quic_devipriy@quicinc.com>
Tue, 6 Aug 2024 06:11:05 +0000 (11:41 +0530)
committerBjorn Andersson <andersson@kernel.org>
Thu, 15 Aug 2024 02:56:45 +0000 (21:56 -0500)
commit6357efe3abead68048729adf11a9363881657939
treee50409ea4e8644a6112be1966948efb2568cef8e
parentf4c16a7cdbd2edecdb854f2ce0ef07c6263c5379
clk: qcom: ipq9574: Update the alpha PLL type for GPLLs

Update PLL offsets to DEFAULT_EVO to configure MDIO to 800MHz.

The incorrect clock frequency leads to an incorrect MDIO clock. This,
in turn, affects the MDIO hardware configurations as the divider is
calculated from the MDIO clock frequency. If the clock frequency is
not as expected, the MDIO register fails due to the generation of an
incorrect MDIO frequency.

This issue is critical as it results in incorrect MDIO configurations
and ultimately leads to the MDIO function not working. This results in
a complete feature failure affecting all Ethernet PHYs. Specifically,
Ethernet will not work on IPQ9574 due to this issue.

Currently, the clock frequency is set to CLK_ALPHA_PLL_TYPE_DEFAULT.
However, this setting does not yield the expected clock frequency.
To rectify this, we need to change this to CLK_ALPHA_PLL_TYPE_DEFAULT_EVO.

This modification ensures that the clock frequency aligns with our
expectations, thereby resolving the MDIO register failure and ensuring
the proper functioning of the Ethernet on IPQ9574.

Fixes: d75b82cff488 ("clk: qcom: Add Global Clock Controller driver for IPQ9574")
Signed-off-by: devi priya <quic_devipriy@quicinc.com>
Signed-off-by: Amandeep Singh <quic_amansing@quicinc.com>
Link: https://lore.kernel.org/r/20240806061105.2849944-1-quic_amansing@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
drivers/clk/qcom/gcc-ipq9574.c