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Date:   Fri, 22 May 2020 16:07:23 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH] net: ethernet: stmmac: Enable interface clocks on
 probe for IPQ806x

From: Jonathan McDowell <>
Date: Thu, 21 May 2020 12:49:34 +0100

> The ipq806x_gmac_probe() function enables the PTP clock but not the
> appropriate interface clocks. This means that if the bootloader hasn't
> done so attempting to bring up the interface will fail with an error
> like:
> [   59.028131] ipq806x-gmac-dwmac 37600000.ethernet: Failed to reset the dma
> [   59.028196] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_hw_setup: DMA engine initialization failed
> [   59.034056] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_open: Hw setup failed
> This patch, a slightly cleaned up version of one posted by Sergey
> Sergeev in:
> correctly enables the clock; we have already configured the source just
> before this.
> Tested on a MikroTik RB3011.
> Signed-off-by: Jonathan McDowell <>

Applied, thanks.

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