linux-pci.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Geraldo Nascimento <geraldogabriel@gmail.com>
To: linux-rockchip@lists.infradead.org
Cc: "Shawn Lin" <shawn.lin@rock-chips.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Manivannan Sadhasivam" <mani@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Heiko Stuebner" <heiko@sntech.de>,
	"Vinod Koul" <vkoul@kernel.org>,
	"Kishon Vijay Abraham I" <kishon@kernel.org>,
	"Rick wertenbroek" <rick.wertenbroek@gmail.com>,
	linux-phy@lists.infradead.org, linux-pci@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [RFC PATCH v6 3/4] phy: rockchip-pcie: Enable all four lanes if required
Date: Fri, 20 Jun 2025 22:48:45 -0300	[thread overview]
Message-ID: <b203b067e369411b029039f96cfeae300874b4c7.1750470187.git.geraldogabriel@gmail.com> (raw)
In-Reply-To: <cover.1750470187.git.geraldogabriel@gmail.com>

Current code enables only Lane 0 because pwr_cnt will be incremented on
first call to the function. Let's reorder the enablement code to enable
all 4 lanes through GRF.

Signed-off-by: Geraldo Nascimento <geraldogabriel@gmail.com>
---
 drivers/phy/rockchip/phy-rockchip-pcie.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-pcie.c b/drivers/phy/rockchip/phy-rockchip-pcie.c
index bd44af36c67a..f22ffb41cdc2 100644
--- a/drivers/phy/rockchip/phy-rockchip-pcie.c
+++ b/drivers/phy/rockchip/phy-rockchip-pcie.c
@@ -160,6 +160,12 @@ static int rockchip_pcie_phy_power_on(struct phy *phy)
 
 	guard(mutex)(&rk_phy->pcie_mutex);
 
+	regmap_write(rk_phy->reg_base,
+		     rk_phy->phy_data->pcie_laneoff,
+		     HIWORD_UPDATE(!PHY_LANE_IDLE_OFF,
+				   PHY_LANE_IDLE_MASK,
+				   PHY_LANE_IDLE_A_SHIFT + inst->index));
+
 	if (rk_phy->pwr_cnt++) {
 		return 0;
 	}
@@ -176,12 +182,6 @@ static int rockchip_pcie_phy_power_on(struct phy *phy)
 				   PHY_CFG_ADDR_MASK,
 				   PHY_CFG_ADDR_SHIFT));
 
-	regmap_write(rk_phy->reg_base,
-		     rk_phy->phy_data->pcie_laneoff,
-		     HIWORD_UPDATE(!PHY_LANE_IDLE_OFF,
-				   PHY_LANE_IDLE_MASK,
-				   PHY_LANE_IDLE_A_SHIFT + inst->index));
-
 	/*
 	 * No documented timeout value for phy operation below,
 	 * so we make it large enough here. And we use loop-break
-- 
2.49.0


  parent reply	other threads:[~2025-06-21  1:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-21  1:47 [RFC PATCH v6 0/4] PCI: rockchip: Improve driver quality Geraldo Nascimento
2025-06-21  1:48 ` [RFC PATCH v6 1/4] PCI: rockchip: Use standard PCIe defines Geraldo Nascimento
2025-06-21  1:48 ` [RFC PATCH v6 2/4] PCI: rockchip: Set Target Link Speed before retraining Geraldo Nascimento
2025-06-21  1:48 ` Geraldo Nascimento [this message]
2025-06-21  1:49 ` [RFC PATCH v6 4/4] phy: rockchip-pcie: Properly disable TEST_WRITE strobe signal Geraldo Nascimento
2025-06-21  7:39 ` [RFC PATCH v6 0/4] PCI: rockchip: Improve driver quality Heiko Stuebner
2025-06-21 11:33   ` Geraldo Nascimento

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=b203b067e369411b029039f96cfeae300874b4c7.1750470187.git.geraldogabriel@gmail.com \
    --to=geraldogabriel@gmail.com \
    --cc=bhelgaas@google.com \
    --cc=heiko@sntech.de \
    --cc=kishon@kernel.org \
    --cc=kw@linux.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pci@vger.kernel.org \
    --cc=linux-phy@lists.infradead.org \
    --cc=linux-rockchip@lists.infradead.org \
    --cc=lpieralisi@kernel.org \
    --cc=mani@kernel.org \
    --cc=rick.wertenbroek@gmail.com \
    --cc=robh@kernel.org \
    --cc=shawn.lin@rock-chips.com \
    --cc=vkoul@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).