From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751159AbeDNKqm (ORCPT ); Sat, 14 Apr 2018 06:46:42 -0400 Received: from mail-io0-f193.google.com ([209.85.223.193]:33423 "EHLO mail-io0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751115AbeDNKqj (ORCPT ); Sat, 14 Apr 2018 06:46:39 -0400 X-Google-Smtp-Source: AIpwx48Vrpt3/UfDY/66A/TVfYIDLYCx8LWJQiyUxn8KyNsJLB1tobfCU1jlqeqXncn8vjQAA07iUWIb9uYzRbS/SMI= MIME-Version: 1.0 In-Reply-To: References: <20180316175354.21437-1-icenowy@aosc.io> <20180316175354.21437-4-icenowy@aosc.io> From: Jagan Teki Date: Sat, 14 Apr 2018 16:16:38 +0530 Message-ID: Subject: Re: [PATCH 3/7] bus: add bus driver for accessing Allwinner A64 DE2 To: Chen-Yu Tsai Cc: Icenowy Zheng , Rob Herring , Maxime Ripard , devicetree , linux-arm-kernel , linux-kernel , linux-clk , linux-sunxi Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Apr 14, 2018 at 4:00 PM, Chen-Yu Tsai wrote: > On Sat, Apr 14, 2018 at 6:25 PM, Jagan Teki wrote: >> On Fri, Mar 16, 2018 at 11:23 PM, Icenowy Zheng wrote: >>> The "Display Engine 2.0" (usually called DE2) on the Allwinner A64 SoC >>> is different from the ones on other Allwinner SoCs. It requires a SRAM >>> region to be claimed, otherwise all DE2 subblocks won't be accessible. >>> >>> Add a bus driver for the Allwinner A64 DE2 part which claims the SRAM >>> region when probing. >> >> Along with this bus driver, we also need >> drivers/gpu/drm/sun4i/sun4i_drv.c which can usually drive the >> pipelines like mixer0 and 1 are the cases for A64? > > I imagine that's the next part to be sent out, after the hardware > representation in the device tree has been decided on. Yeah, this hardware representation along with separate bus driver going like in another direction especially if we add pipelines support to it, may be we can add sram stuff to platdata of existinf sun4i_drv.c Jagan. -- Jagan Teki Senior Linux Kernel Engineer | Amarula Solutions U-Boot, Linux | Upstream Maintainer Hyderabad, India. From mboxrd@z Thu Jan 1 00:00:00 1970 From: jagan@amarulasolutions.com (Jagan Teki) Date: Sat, 14 Apr 2018 16:16:38 +0530 Subject: [PATCH 3/7] bus: add bus driver for accessing Allwinner A64 DE2 In-Reply-To: References: <20180316175354.21437-1-icenowy@aosc.io> <20180316175354.21437-4-icenowy@aosc.io> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sat, Apr 14, 2018 at 4:00 PM, Chen-Yu Tsai wrote: > On Sat, Apr 14, 2018 at 6:25 PM, Jagan Teki wrote: >> On Fri, Mar 16, 2018 at 11:23 PM, Icenowy Zheng wrote: >>> The "Display Engine 2.0" (usually called DE2) on the Allwinner A64 SoC >>> is different from the ones on other Allwinner SoCs. It requires a SRAM >>> region to be claimed, otherwise all DE2 subblocks won't be accessible. >>> >>> Add a bus driver for the Allwinner A64 DE2 part which claims the SRAM >>> region when probing. >> >> Along with this bus driver, we also need >> drivers/gpu/drm/sun4i/sun4i_drv.c which can usually drive the >> pipelines like mixer0 and 1 are the cases for A64? > > I imagine that's the next part to be sent out, after the hardware > representation in the device tree has been decided on. Yeah, this hardware representation along with separate bus driver going like in another direction especially if we add pipelines support to it, may be we can add sram stuff to platdata of existinf sun4i_drv.c Jagan. -- Jagan Teki Senior Linux Kernel Engineer | Amarula Solutions U-Boot, Linux | Upstream Maintainer Hyderabad, India.