Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933272Ab3CVMtJ (ORCPT ); Fri, 22 Mar 2013 08:49:09 -0400 Received: from mail-wi0-f170.google.com ([209.85.212.170]:57486 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932659Ab3CVMtG (ORCPT ); Fri, 22 Mar 2013 08:49:06 -0400 MIME-Version: 1.0 In-Reply-To: <1363776767-2635-1-git-send-email-p.zabel@pengutronix.de> References: <1363776767-2635-1-git-send-email-p.zabel@pengutronix.de> Date: Fri, 22 Mar 2013 13:49:04 +0100 Message-ID: Subject: Re: [PATCH v9 RESEND 0/4] Add generic driver for on-chip SRAM From: Michal Simek To: Philipp Zabel , Andrew Morton Cc: linux-kernel@vger.kernel.org, Arnd Bergmann , Greg Kroah-Hartman , Grant Likely , Rob Herring , Paul Gortmaker , Shawn Guo , Huang Shijie , Dong Aisheng , Matt Porter , Fabio Estevam , Javier Martin , kernel@pengutronix.de, devicetree-discuss@lists.ozlabs.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2930 Lines: 70 Hi Andrew, 2013/3/20 Philipp Zabel : > Hi, last time I posted was a bit close to the merge window, so I'm > reposting now. Greg, Arnd, could you take the first two patches? > > These patches add support to configure on-chip SRAM via device-tree > node or platform data and to obtain the resulting genalloc pool from > the struct device pointer or a phandle pointing at the device tree node. > This allows drivers to allocate SRAM with the genalloc API without > hard-coding the genalloc pool pointer. > > The on-chip SRAM on i.MX53 and i.MX6q can be registered via device tree > and changed to use the simple generic SRAM driver: > > ocram: ocram@00900000 { > compatible = "fsl,imx-ocram", "mmio-sram"; > reg = <0x00900000 0x3f000>; > }; > > A driver that needs to allocate SRAM buffers, like the video processing > unit on i.MX53, can retrieve the genalloc pool from a phandle in the > device tree using of_get_named_gen_pool(node, "iram", 0) from patch 1: > > vpu@63ff4000 { > /* ... */ > iram = <&ocram>; > }; > > Changes since v8: > - The sram driver now matches against the "mmio-sram" compatible string. > - Removed a whitespace error in the device tree binding documentation. > > regards > Philipp > > --- > Documentation/devicetree/bindings/media/coda.txt | 30 ++++++ > Documentation/devicetree/bindings/misc/sram.txt | 16 +++ > arch/arm/boot/dts/imx53.dtsi | 5 + > arch/arm/boot/dts/imx6q.dtsi | 6 ++ > drivers/media/platform/Kconfig | 1 - > drivers/media/platform/coda.c | 45 +++++--- > drivers/misc/Kconfig | 9 ++ > drivers/misc/Makefile | 1 + > drivers/misc/sram.c | 121 ++++++++++++++++++++++ > include/linux/genalloc.h | 15 +++ > include/linux/platform_data/coda.h | 18 ++++ > lib/genalloc.c | 81 +++++++++++++++ > 12 files changed, 333 insertions(+), 15 deletions(-) Andrew: 1/4 and 2/4 patches should probably go through your tree. Can you please handle them? Or Philipp should send these two patches directly to you? Thanks, Michal -- Michal Simek, Ing. (M.Eng) w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/