From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Date: Fri, 5 Jul 2019 09:56:38 +0000 (+0800)
Subject: PCI: mobiveil: Initialize Primary/Secondary/Subordinate bus numbers
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=6f3ab451aa5c2cbff33197d82fe8489cbd55ad91;p=openwrt%2Fstaging%2Fblogic.git

PCI: mobiveil: Initialize Primary/Secondary/Subordinate bus numbers

The reset value of Primary, Secondary and Subordinate bus numbers is
zero which is a broken setup.

Program a sensible default value for Primary/Secondary/Subordinate
bus numbers.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
---

diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
index cdf15cca526e..8f561300a88e 100644
--- a/drivers/pci/controller/pcie-mobiveil.c
+++ b/drivers/pci/controller/pcie-mobiveil.c
@@ -561,6 +561,12 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
 	u32 value, pab_ctrl, type = 0;
 	struct resource_entry *win;
 
+	/* setup bus numbers */
+	value = csr_readl(pcie, PCI_PRIMARY_BUS);
+	value &= 0xff000000;
+	value |= 0x00ff0100;
+	csr_writel(pcie, value, PCI_PRIMARY_BUS);
+
 	/*
 	 * program Bus Master Enable Bit in Command Register in PAB Config
 	 * Space