Simon,
2015-08-30 0:10 GMT+09:00 Simon Glass sjg@chromium.org:
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 sjg@chromium.org
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>;
You are adding "u-boot,dm-pre-reloc" to a simple-bus node.
With this commit, all the children are bound before relocation.
simple_bus_post_bind() calls dm_scan_fdt_node() with false for 'pre_reloc_only'. I guess, this implementation is a problem.
Currently, 'pre_reloc_only' can be specified for the first-level nodes.
For example, assume node structure like this:
amba { uart0 {
};
pinctrl {
};
usb {
};
eth {
}; };
Please tell me: how to bind "uart0" and "pinctrl", but not "usb", "eth" before relocation.
Any idea to propagate 'pre_reloc_only' downwards?