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Thu, 6 Nov 2025 15:23:14 +0530 (IST) Received: from zimbra.couthit.local (zimbra [10.10.10.103]) by zimbra.couthit.local (Postfix) with ESMTP id 8EDF01781F3C; Thu, 6 Nov 2025 15:23:14 +0530 (IST) Date: Thu, 6 Nov 2025 15:23:14 +0530 (IST) From: Parvathi Pudi To: afd Cc: nm , Vignesh Raghavendra , tony , robh , krzk+dt , conor+dt , richardcochran , linux-omap , devicetree , linux-kernel , netdev , Andrew Lunn , danishanwar , pratheesh , j-rameshbabu , praneeth , srk , rogerq , krishna , mohan , pmohan , basharath , m-karicheri2 , parvathi Message-ID: <444398864.187812.1762422794296.JavaMail.zimbra@couthit.local> In-Reply-To: <89858ed0-58fd-4056-b8af-065c92885a10@ti.com> References: <20251103124820.1679167-1-parvathi@couthit.com> <20251103124820.1679167-3-parvathi@couthit.com> <89858ed0-58fd-4056-b8af-065c92885a10@ti.com> Subject: Re: [PATCH v2 2/2] arm: dts: ti: Adds support for AM335x and AM437x Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Mailer: Zimbra 8.8.15_GA_3968 (ZimbraWebClient - GC138 (Linux)/8.8.15_GA_3968) Thread-Topic: Adds support for AM335x and AM437x Thread-Index: 5iKEgrqd+6T7XN5cqv4nZpstY2kVHg== X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server.couthit.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - couthit.com X-Get-Message-Sender-Via: server.couthit.com: authenticated_id: smtp@couthit.com X-Authenticated-Sender: server.couthit.com: smtp@couthit.com X-Source: X-Source-Args: X-Source-Dir: Hi, > On 11/3/25 6:47 AM, Parvathi Pudi wrote: >> From: Roger Quadros >> >> PRU-ICSS instance consists of two PRU cores along with various >> peripherals such as the Interrupt Controller (PRU_INTC), the Industrial >> Ethernet Peripheral(IEP), the Real Time Media Independent Interface >> controller (MII_RT), and the Enhanced Capture (eCAP) event module. >> >> The TI Sitara AM335x ICE-V2 consists of single PRU-ICSS instance, >> This patch adds the new device tree source file in-order to use >> PRU-ICSS instance, along with makefile changes to add the new DTS >> file for PRUSS. >> >> The TI Sitara AM437x series of devices consists of 2 PRU-ICSS instances >> (PRU-ICSS0 and PRU-ICSS1). This patch adds the device tree nodes for the >> PRU-ICSS1 instance to support DUAL-MAC mode of operation. Support for >> Ethernet over PRU is available only for ICSS1 instance. >> >> am33xx-l4.dtsi, am4372.dtsi - Adds IEP and eCAP peripheral as child nodes >> of the PRUSS subsystem node. >> >> am335x-icev2-prueth.dts, am437x-idk-evm.dts - Adds PRU-ICSS >> instance node along with PRU eth port information and corresponding >> port configuration. It includes interrupt mapping for packet reception, >> HW timestamp collection, and PRU Ethernet ports in MII mode, >> >> GPIO configuration, boot strapping along with delay configuration for >> individual PRU Ethernet port and other required nodes. >> >> Signed-off-by: Roger Quadros >> Signed-off-by: Andrew F. Davis >> Signed-off-by: Murali Karicheri >> Signed-off-by: Basharath Hussain Khaja >> Signed-off-by: Parvathi Pudi >> --- >> arch/arm/boot/dts/ti/omap/Makefile | 1 + >> .../boot/dts/ti/omap/am335x-icev2-prueth.dts | 533 ++++++++++++++++++ >> arch/arm/boot/dts/ti/omap/am33xx-l4.dtsi | 11 + >> arch/arm/boot/dts/ti/omap/am4372.dtsi | 11 + >> arch/arm/boot/dts/ti/omap/am437x-idk-evm.dts | 137 ++++- >> 5 files changed, 692 insertions(+), 1 deletion(-) >> create mode 100644 arch/arm/boot/dts/ti/omap/am335x-icev2-prueth.dts >> >> diff --git a/arch/arm/boot/dts/ti/omap/Makefile >> b/arch/arm/boot/dts/ti/omap/Makefile >> index 1aef60eef671..d06dd31d0bb6 100644 >> --- a/arch/arm/boot/dts/ti/omap/Makefile >> +++ b/arch/arm/boot/dts/ti/omap/Makefile >> @@ -100,6 +100,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \ >> am335x-evmsk.dtb \ >> am335x-guardian.dtb \ >> am335x-icev2.dtb \ >> + am335x-icev2-prueth.dtb \ > > This new DTB looks to be almost identical to the regular am335x-icev2.dtb, to > add an optional node to an existing board use DT overlay, do not clone the > whole board DT just to add a node. Maybe that is how we hacked around this > in our evil vendor tree back in 2018 but do not take our old hacks and push > them upstream as-is. > > Andrew > Understood. We will review this redundancy and revert back with an update. Thanks and Regards, Parvathi.