[PATCH] PCI: rcar-gen4: Fix PHY initialization

[PATCH] PCI: rcar-gen4: Fix PHY initialization

[Marek Vasut]

R-Car V4H Reference Manual R19UH0186EJ0130 Rev.1.30 Apr. 21, 2025
page 4581 Figure 104.3b Initial Setting of PCIEC(example) middle
of the figure indicates that fourth write into register 0x148 [2:0]
is 0x3 or GENMASK(1, 0). The current code writes GENMASK(11, 0)
which is a typo. Fix the typo.

Fixes: faf5a975ee3b ("PCI: rcar-gen4: Add support for R-Car V4H")
Cc: <stable@vger.kernel.org>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: "Krzysztof Wilczyński" <kwilczynski@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: linux-pci@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
---
 drivers/pci/controller/dwc/pcie-rcar-gen4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c
index f256ba12b84f..0ef95005b0f5 100644
--- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c
+++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c
@@ -703,7 +703,7 @@ static int rcar_gen4_pcie_ltssm_control(struct rcar_gen4_pcie *rcar, bool enable
 	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(23, 22), BIT(22));
 	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(18, 16), GENMASK(17, 16));
 	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(7, 6), BIT(6));
-	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(2, 0), GENMASK(11, 0));
+	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(2, 0), GENMASK(1, 0));
 	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x1d4, GENMASK(16, 15), GENMASK(16, 15));
 	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x514, BIT(26), BIT(26));
 	rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x0f8, BIT(16), 0);
-- 
2.47.2

Re: [PATCH] PCI: rcar-gen4: Fix PHY initialization

[Manivannan Sadhasivam]

On Wed, 06 Aug 2025 21:25:18 +0200, Marek Vasut wrote:
> R-Car V4H Reference Manual R19UH0186EJ0130 Rev.1.30 Apr. 21, 2025
> page 4581 Figure 104.3b Initial Setting of PCIEC(example) middle
> of the figure indicates that fourth write into register 0x148 [2:0]
> is 0x3 or GENMASK(1, 0). The current code writes GENMASK(11, 0)
> which is a typo. Fix the typo.
> 
> 
> [...]

Applied, thanks!

[1/1] PCI: rcar-gen4: Fix PHY initialization
      commit: d96ac5bdc52b271b4f8ac0670a203913666b8758

Best regards,
-- 
Manivannan Sadhasivam <mani@kernel.org>