linux-kernel - [PATCH v4 0/2] clk: add assigned-clock-rates-u64

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Message-Id: <20240804-clk-u64-v4-0-8e55569f39a4@nxp.com>
Date: Sun, 04 Aug 2024 20:32:54 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-clk@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH v4 0/2] clk: add assigned-clock-rates-u64

i.MX95 PLL VCO supports rates that exceeds UINT32_MAX, and the
i.MX95 System Controller Management Firmware(SCMI) server exports
PLL VCO for SCMI Agents to configure. So introduce
assigned-clock-rates-u64 to support rates that exceeds UINT32_MAX.
And introduce of_property_for_each_u64 to iterate each u64 rate.

The PR to add assigned-clock-rates-u64 to dt-schema has been merged:
https://github.com/devicetree-org/dt-schema/pull/140

Signed-off-by: Peng Fan <peng.fan@....com>
---
Changes in v4:
- Follow Stephen's suggestion to simplify code for patch 2. Thanks for sharing the
  detailed code
- Note again, patch 1 and patch 2 is not relevant as of now. Just for
  simple for reviewing and know the history, still put them in same patchset.
- Link to v3: https://lore.kernel.org/r/20240730-clk-u64-v3-0-4d2b19edaa6e@nxp.com

Changes in v3:
- Add R-b for patch 1
- Rewrite patch 2 to avoid duplicated code. Patch 2 not use code from
  patch 1 now, but since patch 1 is a helper, so keep it.
- Link to v2: https://lore.kernel.org/r/20240729-clk-u64-v2-0-ffa62ee437e6@nxp.com

Changes in v2:
- Follow what Luca did to of_property_for_each_u32 to write of_property_for_each_u64
- Link to v1: https://lore.kernel.org/r/20240621-clk-u64-v1-0-d28a611b2621@nxp.com

---
Peng Fan (2):
      of: property: add of_property_for_each_u64
      clk: clk-conf: support assigned-clock-rates-u64

 drivers/clk/clk-conf.c | 42 +++++++++++++++++++++++++++++++++++++-----
 drivers/of/property.c  | 23 +++++++++++++++++++++++
 include/linux/of.h     | 23 +++++++++++++++++++++++
 3 files changed, 83 insertions(+), 5 deletions(-)
---
base-commit: 233a3e45c39db1e52061f3b6bbab9c630845dfad
change-id: 20240621-clk-u64-70c4333f0f80

Best regards,
-- 
Peng Fan <peng.fan@....com>