Hi Brian,
On 10/27/2017 10:33 AM, Brian Norris wrote:
On Thu, Oct 26, 2017 at 09:28:34PM +0800, Jeffy Chen wrote:
Add optional interrupts for PCIe WAKE# pin and PCI interrupt pin.
Signed-off-by: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx>
---
Changes in v8:
Add optional "pci", and rewrite commit message.
Changes in v7: None
Changes in v6: None
Changes in v5:
Move to pci.txt
Changes in v3: None
Changes in v2: None
Documentation/devicetree/bindings/pci/pci.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/pci.txt b/Documentation/devicetree/bindings/pci/pci.txt
index c77981c5dd18..faed405811cd 100644
--- a/Documentation/devicetree/bindings/pci/pci.txt
+++ b/Documentation/devicetree/bindings/pci/pci.txt
@@ -24,3 +24,6 @@ driver implementation may support the following properties:
unsupported link speed, for instance, trying to do training for
unsupported link speed, etc. Must be '4' for gen4, '3' for gen3, '2'
for gen2, and '1' for gen1. Any other values are invalid.
+- interrupts: Interrupt specifier for each name in interrupt-names.
+- interrupt-names: May contains "wakeup" for PCIe WAKE# interrupt and "pci"
+ for PCI interrupt.
Similar criticism to what Rob made on patch 4: this file already says "a
host bridge driver implementation may support the following properties",
so this property is clearly not for child devices. And so having the
"PCI interrupt" here doesn't make much sense.
Similarly, you're documenting "wakeup" here as a host bridge property,
but then patch 7 is adding per-device support it seems? That seems
wrong.
oops...so there's no section for PCI device here, maybe i should add a
section about "PCI device have standardized Device Tree bindings:" to
place it? will do in next version.
In fact, I'm pretty sure this series fails to actually look in the host
bridge for the "wakeup" interrupt at all! Did you actually test this?
actually it could...
static void *of_pci_setup(struct device *dev)
{
...
device_init_wakeup(dev, false);
dev_info(dev, "Wakeup IRQ %d\n", irq);
return data;
}
[ 1.546561] OF: PCI: MEM 0xfa000000..0xfbdfffff -> 0xfa000000
[ 1.553154] OF: PCI: IO 0xfbe00000..0xfbefffff -> 0xfbe00000
[ 1.560859] rockchip-pcie f8000000.pcie: Wakeup IRQ 64
[ 1.566555] rockchip-pcie f8000000.pcie: PCI host bridge to bus
And again, describing your intentions a little better in the commit
message would make this clearer. Then we could tell which way you
intended this to work...
ok, will do in next version...
Brian
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