Hi Zhiqiang,
On Tue, Aug 27, 2019 at 10:46 AM Z.q. Hou zhiqiang.hou@nxp.com wrote:
Hi Bin,
Thanks a lot for your comments!
-----Original Message----- From: Bin Meng bmeng.cn@gmail.com Sent: 2019年8月26日 22:50 To: Z.q. Hou zhiqiang.hou@nxp.com Cc: U-Boot Mailing List u-boot@lists.denx.de; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Wolfgang Denk wd@denx.de; Priyanka Jain priyanka.jain@nxp.com; Shengzhou Liu shengzhou.liu@nxp.com Subject: Re: [U-Boot] [PATCH 22/47] P1020: dts: Added PCIe DT nodes
Hi Zhiqiang,
On Tue, Jul 23, 2019 at 9:33 PM Hou Zhiqiang Zhiqiang.Hou@nxp.com wrote:
P1020 integrated 2 PCIe controllers, which is compatible with the PCI Express™ Base Specification, Revision 1.0a, and this patch is to add DT node for each PCIe controller.
Signed-off-by: Hou Zhiqiang Zhiqiang.Hou@nxp.com
arch/powerpc/dts/p1020-post.dtsi | 20 ++++++++++++++++++++ arch/powerpc/dts/p1020rdb-pc.dts | 12 ++++++++++++ arch/powerpc/dts/p1020rdb-pc_36b.dts | 12 ++++++++++++ arch/powerpc/dts/p1020rdb-pd.dts | 12 ++++++++++++ 4 files changed, 56 insertions(+)
diff --git a/arch/powerpc/dts/p1020-post.dtsi b/arch/powerpc/dts/p1020-post.dtsi index e1a4f50..1e5e678 100644 --- a/arch/powerpc/dts/p1020-post.dtsi +++ b/arch/powerpc/dts/p1020-post.dtsi @@ -25,3 +25,23 @@ last-interrupt-source = <255>; }; };
+/* PCIe controller base address 0x9000 */ +&pci1 {
compatible = "fsl,pcie-p1_p2", "fsl,pcie-fsl-qoriq";law_trgt_if = <1>;#address-cells = <3>;#size-cells = <2>;device_type = "pci";bus-range = <0x0 0xff>;+};
+/* PCIe controller base address 0xa000 */ +&pci0 {
compatible = "fsl,pcie-p1_p2", "fsl,pcie-fsl-qoriq";law_trgt_if = <2>;#address-cells = <3>;#size-cells = <2>;device_type = "pci";bus-range = <0x0 0xff>;+}; diff --git a/arch/powerpc/dts/p1020rdb-pc.dts b/arch/powerpc/dts/p1020rdb-pc.dts index fd68b8b..7ebaa61 100644 --- a/arch/powerpc/dts/p1020rdb-pc.dts +++ b/arch/powerpc/dts/p1020rdb-pc.dts @@ -18,6 +18,18 @@ soc: soc@ffe00000 { ranges = <0x0 0x0 0xffe00000 0x100000>; };
pci1: pcie@ffe09000 {Why this is named as pci1?
The P1020 reference manual said the first controller registers offset begin at 0xa000 and the second begin at 0x9000.
reg = <0x0 0xffe09000 0x0 0x1000>; /* registers*/
Shouldn't the <reg> property be put in the dtsi file?
The registers starting addresses are different between 32bit and 36bit dts.
I see. But looks they are inconsistent. Some of the platforms put the reg in the dtsi, and some do not. I believe it's because some platforms force to select CONFIG_PHYS_64BIT hence no need to have two version of <reg> in DT?
Regards, Bin