From: Florian Fainelli <florian.fainelli@broadcom.com>
To: Stanimir Varbanov <svarbanov@suse.de>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Jim Quinlan <jim2101024@gmail.com>,
Nicolas Saenz Julienne <nsaenz@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
kw@linux.com, Philipp Zabel <p.zabel@pengutronix.de>,
Andrea della Porta <andrea.porta@suse.com>,
Phil Elwell <phil@raspberrypi.com>,
Jonathan Bell <jonathan@raspberrypi.com>
Subject: Re: [PATCH v4 08/10] PCI: brcmstb: Adjust PHY PLL setup to use a 54MHz input refclk
Date: Fri, 25 Oct 2024 15:08:01 -0700 [thread overview]
Message-ID: <8bf2ff23-9cb3-40f5-84dc-4aaab466961d@broadcom.com> (raw)
In-Reply-To: <20241025124515.14066-9-svarbanov@suse.de>
On 10/25/24 05:45, Stanimir Varbanov wrote:
> The default input reference clock for the PHY PLL is 100Mhz, except for
> some devices where it is 54Mhz like bcm2712C1 and bcm2712D0.
>
> To implement this adjustments introduce a new .post_setup op in
> pcie_cfg_data and call it at the end of brcm_pcie_setup function.
>
> The bcm2712 .post_setup callback implements the required MDIO writes that
> switch the PLL refclk and also change PHY PM clock period.
>
> Without this RPi5 PCIex1 is unable to enumerate endpoint devices on
> the expansion connector.
>
> Signed-off-by: Stanimir Varbanov <svarbanov@suse.de>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
--
Florian
next prev parent reply other threads:[~2024-10-26 0:31 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-25 12:45 [PATCH v4 00/10] Add PCIe support for bcm2712 Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 01/10] dt-bindings: interrupt-controller: Add bcm2712 MSI-X DT bindings Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 02/10] dt-bindings: PCI: brcmstb: Update bindings for PCIe on bcm2712 Stanimir Varbanov
2024-10-25 21:55 ` Rob Herring
2024-10-25 12:45 ` [PATCH v4 03/10] irqchip: Add Broadcom bcm2712 MSI-X interrupt controller Stanimir Varbanov
2024-10-28 20:06 ` Thomas Gleixner
2024-11-01 13:15 ` Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 04/10] PCI: brcmstb: Reuse config structure Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 05/10] PCI: brcmstb: Expand inbound window size up to 64GB Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 06/10] PCI: brcmstb: Enable external MSI-X if available Stanimir Varbanov
2024-11-10 9:41 ` Stanimir Varbanov
2024-12-11 20:01 ` James Quinlan
2024-12-18 14:54 ` Stanimir Varbanov
2024-12-18 16:20 ` Jim Quinlan
2024-10-25 12:45 ` [PATCH v4 07/10] PCI: brcmstb: Add bcm2712 support Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 08/10] PCI: brcmstb: Adjust PHY PLL setup to use a 54MHz input refclk Stanimir Varbanov
2024-10-25 22:08 ` Florian Fainelli [this message]
2024-12-09 22:52 ` James Quinlan
2024-12-10 13:42 ` Stanimir Varbanov
2024-12-11 19:39 ` James Quinlan
2024-12-11 20:54 ` Jonathan Bell
2024-12-12 13:48 ` Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 09/10] arm64: dts: broadcom: bcm2712: Add PCIe DT nodes Stanimir Varbanov
2024-10-25 12:45 ` [PATCH v4 10/10] arm64: dts: broadcom: bcm2712-rpi-5-b: Enable " Stanimir Varbanov
2024-12-23 16:35 ` [PATCH v4 00/10] Add PCIe support for bcm2712 Olivier Benjamin
2025-01-21 15:01 ` Stanimir Varbanov
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