dt-bindings: PCI: mobiveil: Change gpio_slave and apb_csr to optional

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@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>

diff --git a/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt b/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
index a618d47..6415699 100644 (file)
--- 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