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From: Hector Martin <marcan@marcan.st>
To: Marc Zyngier <maz@kernel.org>, Alyssa Rosenzweig <alyssa@rosenzweig.io>
Cc: "Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Hector Martin" <marcan@marcan.st>
Subject: [PATCH] PCI: apple: Fix REFCLK1 enable/poll logic
Date: Wed, 17 Nov 2021 23:00:44 +0900	[thread overview]
Message-ID: <20211117140044.193865-1-marcan@marcan.st> (raw)

REFCLK1 has req/ack bits just like REFCLK0

Signed-off-by: Hector Martin <marcan@marcan.st>
---
 drivers/pci/controller/pcie-apple.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c
index b665d29af77a..420c291a5c68 100644
--- a/drivers/pci/controller/pcie-apple.c
+++ b/drivers/pci/controller/pcie-apple.c
@@ -42,8 +42,9 @@
 #define   CORE_FABRIC_STAT_MASK		0x001F001F
 #define CORE_LANE_CFG(port)		(0x84000 + 0x4000 * (port))
 #define   CORE_LANE_CFG_REFCLK0REQ	BIT(0)
-#define   CORE_LANE_CFG_REFCLK1		BIT(1)
+#define   CORE_LANE_CFG_REFCLK1REQ	BIT(1)
 #define   CORE_LANE_CFG_REFCLK0ACK	BIT(2)
+#define   CORE_LANE_CFG_REFCLK1ACK	BIT(3)
 #define   CORE_LANE_CFG_REFCLKEN	(BIT(9) | BIT(10))
 #define CORE_LANE_CTL(port)		(0x84004 + 0x4000 * (port))
 #define   CORE_LANE_CTL_CFGACC		BIT(15)
@@ -481,9 +482,9 @@ static int apple_pcie_setup_refclk(struct apple_pcie *pcie,
 	if (res < 0)
 		return res;
 
-	rmw_set(CORE_LANE_CFG_REFCLK1, pcie->base + CORE_LANE_CFG(port->idx));
+	rmw_set(CORE_LANE_CFG_REFCLK1REQ, pcie->base + CORE_LANE_CFG(port->idx));
 	res = readl_relaxed_poll_timeout(pcie->base + CORE_LANE_CFG(port->idx),
-					 stat, stat & CORE_LANE_CFG_REFCLK1,
+					 stat, stat & CORE_LANE_CFG_REFCLK1ACK,
 					 100, 50000);
 
 	if (res < 0)
-- 
2.33.0


             reply	other threads:[~2021-11-17 14:01 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-17 14:00 Hector Martin [this message]
2021-11-17 17:56 ` [PATCH] PCI: apple: Fix REFCLK1 enable/poll logic Marc Zyngier
2021-11-30 16:49   ` Lorenzo Pieralisi
2021-11-30 17:26     ` Hector Martin
2021-12-06 10:45 ` Lorenzo Pieralisi

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