From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Simek Date: Mon, 31 Aug 2015 16:16:39 +0200 Subject: [U-Boot] [PATCH 11/13] arm: zynq: dts: Add U-Boot device tree additions In-Reply-To: References: <1440861022-22674-1-git-send-email-sjg@chromium.org> <1440861022-22674-12-git-send-email-sjg@chromium.org> <55E43ABF.5070609@monstr.eu> Message-ID: <55E461C7.9030305@monstr.eu> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 08/31/2015 03:54 PM, Simon Glass wrote: > Hi Michal, > > On 31 August 2015 at 05:30, Michal Simek wrote: >> On 08/29/2015 05:10 PM, Simon Glass wrote: >>> We need to mark some device tree nodes so that they are available before >>> relocation. This enables driver model to find these automatically. In the >>> case of SPL it ensures that these nodes will be retained in SPL. >>> >>> Signed-off-by: Simon Glass >>> --- >>> >>> arch/arm/dts/zynq-7000.dtsi | 1 + >>> arch/arm/dts/zynq-microzed.dts | 5 +++++ >>> arch/arm/dts/zynq-picozed.dts | 5 +++++ >>> arch/arm/dts/zynq-zc702.dts | 1 + >>> arch/arm/dts/zynq-zc706.dts | 1 + >>> arch/arm/dts/zynq-zc770-xm010.dts | 1 + >>> arch/arm/dts/zynq-zc770-xm011.dts | 1 + >>> arch/arm/dts/zynq-zc770-xm012.dts | 1 + >>> arch/arm/dts/zynq-zc770-xm013.dts | 1 + >>> arch/arm/dts/zynq-zed.dts | 1 + >>> arch/arm/dts/zynq-zybo.dts | 1 + >>> 11 files changed, 19 insertions(+) >>> >>> diff --git a/arch/arm/dts/zynq-7000.dtsi b/arch/arm/dts/zynq-7000.dtsi >>> index 0b62cb0..12614f2 100644 >>> --- a/arch/arm/dts/zynq-7000.dtsi >>> +++ b/arch/arm/dts/zynq-7000.dtsi >>> @@ -54,6 +54,7 @@ >>> }; >>> >>> amba: amba { >>> + u-boot,dm-pre-reloc; >>> compatible = "simple-bus"; >>> #address-cells = <1>; >>> #size-cells = <1>; >>> diff --git a/arch/arm/dts/zynq-microzed.dts b/arch/arm/dts/zynq-microzed.dts >>> index c373a2c..5dff18e6 100644 >>> --- a/arch/arm/dts/zynq-microzed.dts >>> +++ b/arch/arm/dts/zynq-microzed.dts >>> @@ -21,3 +21,8 @@ >>> reg = <0 0x40000000>; >>> }; >>> }; >>> + >>> +&uart1 { >>> + u-boot,dm-pre-reloc; >> >> Was this reviewed on DT mailing list? > > There is a thread going at present for Raspberry Pi but it had not > yielded much light last time I looked. > >> >> TBH adding this to every node seems to me a lot of work. > > This i how it works at present. Typically we only have a UART and that > is not necessary since U-Boot can force-bind this. But when the UART > is not in the root node we have to add something. It is partially problem with DT mess that we have platforms with and without bus. :-) > >> Why not just add one more uboot property to chosen with list of IPs >> which needs to be relocated? > > You mean a list of devices needed before relocation? I mean something like this: chosen { u-boot,dm-pre-reloc = <&uart1 ...>; } And then just go through this list. I expect that you are looking for that property anyway. > If you like you could look at working up a patch for this. I'm > certainly interested in other ideas. It does need to be efficient. I will test this series and will look at it in more details soon. Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: OpenPGP digital signature URL: