[PATCH 4/4] PCI: uniphier-ep: Convert unused BAR_RESERVED to BAR_DISABLED for Pro5
From: Manikanta Maddireddy <hidden>
Date: 2026-02-17 05:55:51
Also in:
linux-pci, linux-tegra, lkml
Subsystem:
pci native host bridge and endpoint drivers, pci subsystem, pcie driver for socionext uniphier, the rest · Maintainers:
Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Kunihiko Hayashi, Linus Torvalds
On Uniphier Pro5, BAR_4 and BAR_5 are not the high half of a 64-bit BAR (BAR_4 has no only_64bit set) and are not HW-backed; they are unused. Convert them from BAR_RESERVED to BAR_DISABLED. Add comments for BAR_1 and BAR_3 to clarify they are the high halves of 64-bit BAR0 and BAR2. Signed-off-by: Manikanta Maddireddy <redacted> --- drivers/pci/controller/dwc/pcie-uniphier-ep.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-uniphier-ep.c b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
index d6e73811216e..cf5131eec7bf 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier-ep.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier-ep.c@@ -425,11 +425,11 @@ static const struct uniphier_pcie_ep_soc_data uniphier_pro5_data = { .msix_capable = false, .align = 1 << 16, .bar[BAR_0] = { .only_64bit = true, }, - .bar[BAR_1] = { .type = BAR_RESERVED, }, + .bar[BAR_1] = { .type = BAR_RESERVED, }, /* high half of 64-bit BAR0 */ .bar[BAR_2] = { .only_64bit = true, }, - .bar[BAR_3] = { .type = BAR_RESERVED, }, - .bar[BAR_4] = { .type = BAR_RESERVED, }, - .bar[BAR_5] = { .type = BAR_RESERVED, }, + .bar[BAR_3] = { .type = BAR_RESERVED, }, /* high half of 64-bit BAR2 */ + .bar[BAR_4] = { .type = BAR_DISABLED, }, /* unused */ + .bar[BAR_5] = { .type = BAR_DISABLED, }, /* unused */ }, };
--
2.34.1