linux-kernel - [PATCH v3 0/2] Fix PLL lock timeout and calibration wait time

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Message-ID: <20250502033451.2291330-1-devarsht@ti.com>
Date: Fri, 2 May 2025 09:04:49 +0530
From: Devarsh Thakkar <devarsht@...com>
To: <vkoul@...nel.org>, <kishon@...nel.org>, <mripard@...nel.org>,
        <linux-phy@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: <sakari.ailus@...ux.intel.com>, <u.kleine-koenig@...libre.com>,
        <vigneshr@...com>, <aradhya.bhatia@...ux.dev>, <s-jain1@...com>,
        <r-donadkar@...com>, <tomi.valkeinen@...asonboard.com>,
        <devarsht@...com>
Subject: [PATCH v3 0/2] Fix PLL lock timeout and calibration wait time

This fixes PLL lockup and O_CMN_READY timeout by moving the polling
function after common state machine gets enabled. Also fix the
calibration wait time to optimize the polling time.

Changelog:
V3: 
-   Use read-modify-write for using calibrated value for PLL
    lock time
-   Move out PLL clock configuration part to power_on function

V2: Separate patch for calibration logic and
    return error code on polling 

Previous versions:
V2: https://lore.kernel.org/all/20250326152320.3835249-1-devarsht@ti.com/
V1: https://lore.kernel.org/all/20241230125319.941372-1-devarsht@ti.com/

Test logs:
Link: https://gist.github.com/devarsht/89e4830e886774fcd50aa6e29cce3a79

Rangediff:
V2->V3:
https://gist.github.com/devarsht/c4d2c4f6715ec7aa4df4cb2c7991b7aa

Devarsh Thakkar (2):
  phy: cadence: cdns-dphy: Fix PLL lock and O_CMN_READY polling
  phy: cadence: cdns-dphy: Update calibration wait time for startup
    state machine

 drivers/phy/cadence/cdns-dphy.c | 111 +++++++++++++++++++++++++-------
 1 file changed, 87 insertions(+), 24 deletions(-)

-- 
2.39.1