Hi Fabio: > -----Original Message----- > From: Fabio Estevam [mailto:festevam@xxxxxxxxx] > Sent: Thursday, September 25, 2014 9:40 AM > To: Zhu Richard-R65037 > Cc: linux-pci-owner@xxxxxxxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx; Guo Shawn- > R65073; Lucas Stach; Tim Harvey > Subject: Re: [PATCH v2 1/5] PCI: imx6: enable pcie on imx6qdl sabreauto > > On Wed, Sep 24, 2014 at 10:21 PM, Hong-Xing.Zhu@xxxxxxxxxxxxx <Hong- > Xing.Zhu@xxxxxxxxxxxxx> wrote: > > [Richard] Yes it is. On ARD board, the PCIE_RST_B is connected to > CPU_PER_RST_B. > > But this is not one signal that can be controlled by PCIE module itself. > > Let's take imx6qdl-sabresd.dtsi for example: > > &pcie { > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_pcie>; > reset-gpio = <&gpio7 12 0>; > status = "okay"; > }; > > It uses GPIO7_12 for PCI reset. > > For sabreauto we just need to change to something like this format: > > reset-gpio = <&max7310_b 2 0>; > > > It is kicked once at the moment when the board is powered up. > > Yes, the signal is connected to power-on and it can also be independently > controlled via MAX7310. > > Anyway, no need to change this if you don't want. I can send a patch adding > the reset later :-) [Richard] One more dependency, this signal would be share-used by multi-modules. I'm afraid the operations of the pcie-reset-b would bring un-exceptional to other modules. Best Regards Richard Zhu ��.n��������+%������w��{.n�����{���"�)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
