From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: Re: [PATCH v2 00/10] Add support for TISCI irqchip drivers Date: Mon, 22 Oct 2018 13:39:02 -0700 Message-ID: <942981b8-7536-2b6b-ad49-dc59671cbda6@oracle.com> References: <20181018154017.7112-1-lokeshvutla@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20181018154017.7112-1-lokeshvutla@ti.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Lokesh Vutla , Nishanth Menon , Rob Herring , tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com Cc: Santosh Shilimkar , Linux ARM Mailing List , linux-kernel@vger.kernel.org, Tero Kristo , Sekhar Nori , Device Tree Mailing List , Grygorii Strashko , Peter Ujfalusi List-Id: devicetree@vger.kernel.org On 10/18/2018 8:40 AM, Lokesh Vutla wrote: > TISCI abstracts the handling of IRQ routes where interrupt sources > are not directly connected to host interrupt controller. This series > adds support for: > - TISCI commands needed for IRQ configuration > - Interrupt Router(INTR) and Interrupt Aggregator(INTA) drivers > > More information on TISCI IRQ management can be found here[1]. > Complete TISCI resource management information can be found here[2]. > AM65x SoC related TISCI information can be found here[3]. > INTR and INTA related information can be found in TRM[4]. > I didn't read the specs but from what you described in INTA and INTR bindings, does the flow of IRQs like below ? Device IRQ(e.g USB) -->INTR-->INTA--->HOST IRQ controller(GIC) The confusing part is aggregator and can multiplex as well as grouping but seems like its event grouping or multiplexing than actual device IRQ grouping or multi-plexsing. What am I missing ? Regards,S antosh