linux-kernel - Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core

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Date:	Wed, 30 Mar 2016 12:10:29 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Roberto Fichera <kernel@...no-soft.it>,
	Tim Harvey <tharvey@...eworks.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Richard Zhu <Richard.Zhu@...escale.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Krzysztof Hałasa <khalasa@...p.pl>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Petr Štetiar <ynezz@...e.cz>,
	Fabio Estevam <festevam@...il.com>,
	Lucas Stach <l.stach@...gutronix.de>
Subject: Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

On Wednesday 30 March 2016 10:00:33 Roberto Fichera wrote:
> >
> > Check your XIO2001 routing and insure the following for proper IRQ mapping:
> > Slot12: IDSEL A28: socket INTA = XIO2001 INTA
> > Slot13: IDSEL A29: socket INTA = XIO2001 INTB
> > Slot14: IDSEL A30: socket INTA = XIO2001 INTC
> > Slot15: IDSEL A31: socket INTA = XIO2001 INTD
> 
> After crosschecking with our hardware designer the PCB IRQ mapping is the following:
> 
> J2 : IDSEL  A16: => Device 0 : socket INTA = XIO2001 INTA
> J3 : IDSEL  A18: => Device 2 : socket INTA = XIO2001 INTA* **(This should be INTC)*         
> J11: IDSEL A20: => Device 4 : socket INTA = XIO2001 INTA
> 
> The interrupt routing for J3 is wrong. The XIO2001 driver may expect Device 2 to interrupt on INTC - but it will
> interrupt on INTA.

What does your interrupt-map property look like then? Note that you
have to override both map and map-mask in this case.

	Arnd