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34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
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From d9317f90391167ebc275696d9df3c21ce754d609 Mon Sep 17 00:00:00 2001
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Date: Thu, 7 May 2020 19:20:20 +0200
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Subject: [PATCH] PCI: brcmstb: Assert fundamental reset on
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initialization
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commit 22e21e51ce755399fd42055a3f668ee4af370881 upstream.
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While preparing the driver for upstream this detail was missed.
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If not asserted during the initialization process, devices connected on
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the bus will not be made aware of the internal reset happening. This,
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potentially resulting in unexpected behavior.
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Link: https://lore.kernel.org/r/20200507172020.18000-1-nsaenzjulienne@suse.de
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Fixes: c0452137034b ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver")
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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Acked-by: Florian Fainelli <f.fainelli@gmail.com>
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---
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drivers/pci/controller/pcie-brcmstb.c | 1 +
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1 file changed, 1 insertion(+)
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--- a/drivers/pci/controller/pcie-brcmstb.c
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+++ b/drivers/pci/controller/pcie-brcmstb.c
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@@ -697,6 +697,7 @@ static int brcm_pcie_setup(struct brcm_p
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/* Reset the bridge */
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brcm_pcie_bridge_sw_init_set(pcie, 1);
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+ brcm_pcie_perst_set(pcie, 1);
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usleep_range(100, 200);
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