From 2454388fd22dbec785fa97d5fb9e02aaf880090d Mon Sep 17 00:00:00 2001 From: Hou Zhiqiang Date: Wed, 31 Jul 2019 17:13:27 +0800 Subject: [PATCH] PCI: mobiveil: Initialize Primary/Secondary/Subordinate bus numbers [ Upstream commit 6f3ab451aa5c2cbff33197d82fe8489cbd55ad91 ] 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 Signed-off-by: Lorenzo Pieralisi Reviewed-by: Minghuan Lian Reviewed-by: Subrahmanya Lingappa Signed-off-by: Sasha Levin Signed-off-by: Yang Yingliang --- drivers/pci/controller/pcie-mobiveil.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index 3e81e68b5ce0..2fe7ebdad2d2 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -508,6 +508,12 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie) return err; } + /* 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 -- GitLab