Hi Fabio, On 7/19/23 16:03, Fabio Estevam wrote:
Hi Johannes, On Wed, Jul 19, 2023 at 10:59 AM Johannes Zink <j.zink@xxxxxxxxxxxxxx> wrote:The i.MX8MP Reference Manual rev 1 06/2021, section 11.7.2.5 "Timestamp Support" indicates the PTP timestamp clock expects a typical frequency of 125MHz. As this also improves the precision of the measured timestamps: assign appropriate 125MHz Clock parent. As no one except the timestamping counter uses this clock, there are no side-effects of this change in other peripherals. Signed-off-by: Johannes Zink <j.zink@xxxxxxxxxxxxxx> --- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi index 6f2f50e1639c..7f80dff914c2 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi @@ -1334,7 +1334,7 @@ eqos: ethernet@30bf0000 { <&clk IMX8MP_CLK_ENET_QOS_TIMER>, <&clk IMX8MP_CLK_ENET_QOS>; assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>, - <&clk IMX8MP_SYS_PLL2_100M>, + <&clk IMX8MP_SYS_PLL2_125M>, <&clk IMX8MP_SYS_PLL2_125M>; assigned-clock-rates = <0>, <100000000>, <125000000>;Shouldn't this also be changed to: assigned-clock-rates = <0>, <125000000>, <125000000>;
good catch, thanks! Gonna fix it in v2. Best regards Johannes -- Pengutronix e.K. | Johannes Zink | Steuerwalder Str. 21 | https://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686| Fax: +49-5121-206917-5555 |
