[PATCHv4 15/28] dt-bindings: pci: mobiveil: change gpio_slave and apb_csr to optional

[Z.q. Hou]

From: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>

Change the "gpio_slave" and "apb_csr" to optional, the "gpio_slave"
is not used in current code, and "apb_csr" is not used by some
platforms.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
Acked-by: Subrahmanya Lingappa <l.subrahmanya@xxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Minghuan Lian <Minghuan.Lian@xxxxxxx>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@xxxxxxxxxxxxxx>
---
V4:
 - no change

 Documentation/devicetree/bindings/pci/mobiveil-pcie.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt b/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
index a618d4787dd7..64156993e052 100644
--- a/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
@@ -10,8 +10,10 @@ Required properties:
 	interrupt source. The value must be 1.
 - compatible: Should contain "mbvl,gpex40-pcie"
 - reg: Should contain PCIe registers location and length
+	Mandatory:
 	"config_axi_slave": PCIe controller registers
 	"csr_axi_slave"	  : Bridge config registers
+	Optional:
 	"gpio_slave"	  : GPIO registers to control slot power
 	"apb_csr"	  : MSI registers
 
-- 
2.17.1