From mboxrd@z Thu Jan 1 00:00:00 1970 From: Esben Haabendal Subject: [PATCH] ARM: dts: ls1021a: Specify TBIPA register address Date: Fri, 6 Apr 2018 14:46:35 +0200 Message-ID: <20180406124635.12319-1-esben.haabendal@gmail.com> References: <20180406123836.12019-2-esben.haabendal@gmail.com> Return-path: In-Reply-To: <20180406123836.12019-2-esben.haabendal@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: netdev@vger.kernel.org Cc: Rob Herring , Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Manoil , "David S . Miller" , "Gustavo A . R . Silva" , Esben Haabendal List-Id: devicetree@vger.kernel.org From: Esben Haabendal The current (mildly evil) fsl_pq_mdio code uses an undocumented shadow of the TBIPA register on LS1021A, which happens to be read-only. Changing TBI PHY address therefore does not work on LS1021A. The real (and documented) address of the TBIPA registere lies in the eTSEC block and not in MDIO/MII, which is read/write, so using that fixes the problem. Signed-off-by: Esben Haabendal --- arch/arm/boot/dts/ls1021a.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi index c31dad98f989..728e206009ea 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -587,7 +587,8 @@ device_type = "mdio"; #address-cells = <1>; #size-cells = <0>; - reg = <0x0 0x2d24000 0x0 0x4000>; + reg = <0x0 0x2d24000 0x0 0x4000>, + <0x0 0x2d10030 0x0 0x4>; }; ptp_clock@2d10e00 { -- 2.16.3