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From: Coia Prant <coiaprant@gmail.com>
To: Heiko Stuebner <heiko@sntech.de>
Cc: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Andrew Lunn <andrew@lunn.ch>,
	Frank Wunderlich <frank-w@public-files.de>,
	Peter Geis <pgwipeout@gmail.com>,
	Junhao Xie <bigfoot@classfun.cn>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
	Coia Prant <coiaprant@gmail.com>
Subject: [PATCH 4/5] arm64: dts: rockchip: fix GMAC clock parent on Photonicat
Date: Mon,  2 Nov 2026 03:28:06 +0800	[thread overview]
Message-ID: <20261101192807.897562-5-coiaprant@gmail.com> (raw)
In-Reply-To: <20261101192807.897562-1-coiaprant@gmail.com>

The RGMII WAN port on the Ariaboard Photonicat uses SCLK_GMAC1 as the
GMAC main clock and SCLK_GMAC1_RX_TX as the RGMII speed clock. Only the
parent of SCLK_GMAC1_RX_TX is set, so SCLK_GMAC1 keeps whatever parent
the bootloader or the hardware reset left.

Set the parent of SCLK_GMAC1 to CLK_MAC1_2TOP explicitly, so the GMAC
main clock always uses the internal source and does not depend on the
bootloader state. The rate assignment is unchanged: SCLK_GMAC1_RX_TX
keeps its rate unset, SCLK_GMAC1 stays at 125 MHz.

Fixes: ba124e06ce7b ("arm64: dts: rockchip: add dts for Ariaboard Photonicat RK3568")
Signed-off-by: Coia Prant <coiaprant@gmail.com>
---
 arch/arm64/boot/dts/rockchip/rk3568-photonicat.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-photonicat.dts b/arch/arm64/boot/dts/rockchip/rk3568-photonicat.dts
index b719d5b661c43..7e0a2ab829209 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-photonicat.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-photonicat.dts
@@ -285,7 +285,7 @@ &gmac0 {
 /* Motorcomm YT8521SC WAN port */
 &gmac1 {
 	assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
-	assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>;
+	assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>, <&cru CLK_MAC1_2TOP>;
 	assigned-clock-rates = <0>, <125000000>;
 	clock_in_out = "output";
 	phy-handle = <&rgmii_phy>;
-- 
2.47.3


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  parent reply	other threads:[~2026-11-01 19:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-01 19:28 [PATCH 0/5] arm64: dts: rockchip: fix GMAC clocks and USB OTG power on RK3568 boards Coia Prant
2026-11-01 19:28 ` [PATCH 1/5] arm64: dts: rockchip: fix GMAC clock parents on 9Tripod X3568 v4 Coia Prant
2026-11-01 19:28 ` [PATCH 2/5] arm64: dts: rockchip: fix GMAC clock parents on Graperain G3568 v2 Coia Prant
2026-11-01 19:28 ` [PATCH 3/5] arm64: dts: rockchip: fix GMAC clock setup on BPI-R2 Pro Coia Prant
2026-11-01 19:28 ` Coia Prant [this message]
2026-11-01 19:28 ` [PATCH 5/5] arm64: dts: rockchip: fix USB OTG power on Photonicat in battery mode Coia Prant

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