linux-kernel - [PATCH 0/2] PCI: cadence: Set LTSSM Detect.Quiet state delay.

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Message-ID: <20210309073142.13219-1-nadeem@cadence.com>
Date:   Tue, 9 Mar 2021 08:31:40 +0100
From:   Nadeem Athani <nadeem@...ence.com>
To:     <tjoseph@...ence.com>, <bhelgaas@...gle.com>, <robh+dt@...nel.org>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <lorenzo.pieralisi@....com>,
        <robh@...nel.org>, <kishon@...com>
CC:     <mparab@...ence.com>, <sjakhade@...ence.com>, <nadeem@...ence.com>,
        <pthombar@...ence.com>
Subject: [PATCH 0/2] PCI: cadence: Set LTSSM Detect.Quiet state delay.

This patch includes a set of two patches.
First patch for adding a new property detect-quiet-min-delay in yaml file.
Second patch programs the delay value in host pcie driver.

The parameter detect-quiet-min-delay can be used to program the minimum
time that LTSSM waits on entering Detect.Quiet state.
00 : 0us minimum wait time in Detect.Quiet state.
01 : 100us minimum wait time in Detect.Quiet state.
10 : 1000us minimum wait time in Detect.Quiet state.
11 : 2000us minimum wait time in Detect.Quiet state.

Nadeem Athani (2):
  dt-bindings:pci: Set LTSSM Detect.Quiet state delay.
  PCI: cadence: Set LTSSM Detect.Quiet state delay.

 .../bindings/pci/cdns,cdns-pcie-host.yaml          | 13 +++++++++++++
 drivers/pci/controller/cadence/pcie-cadence-host.c | 22 ++++++++++++++++++++++
 drivers/pci/controller/cadence/pcie-cadence.h      | 10 ++++++++++
 3 files changed, 45 insertions(+)

-- 
2.15.0