[PATCH v2 0/8] Enable cpufreq for IPQ5332 & IPQ9574

Varadarajan Narayanan
2023-10-12T09:27:10Z

Depends On:
https://lore.kernel.org/lkml/20230913-gpll_cleanup-v2-6-c8ceb1a37680@quicinc.com/T/

This patch series aims to enable cpufreq for IPQ5332 and IPQ9574.
For IPQ5332, a minor enhancement to Stromer Plus ops and a safe
source switch is needed before cpu freq can be enabled.

These are also included in this series. Posting this as a single
series. Please let me know if this is not correct, will split in
the subsequent revisions.

Passed the following DT related validations
make W=1 ARCH=arm64 -j16 DT_CHECKER_FLAGS='-v -m' dt_binding_check DT_SCHEMA_FILES=qcom
make W=1 ARCH=arm64 -j16 CHECK_DTBS=y DT_SCHEMA_FILES=qcom dtbs_check

For IPQ5332:
~~~~~~~~~~~
* This patch series introduces stromer plus ops which
builds on stromer ops and implements a different
set_rate and determine_rate.

A different set_rate is needed since stromer plus PLLs
do not support dynamic frequency scaling. To switch
between frequencies, we have to shut down the PLL,
configure the L and ALPHA values and turn on again. So
introduce the separate set of ops for Stromer Plus PLL.

* Update ipq_pll_stromer_plus to use clk_alpha_pll_stromer_plus_ops
instead of clk_alpha_pll_stromer_ops.

* Set 'l' value to a value that is supported on all SKUs.

* Provide safe source switch for a53pll

* Include IPQ5332 in cpufreq nvmem framework

* Add OPP details to device tree

For IPQ9574:
~~~~~~~~~~~
* Include IPQ9574 in cpufreq nvmem framework

* Add OPP details to device tree

Removed 2 patches from V1 as they have been merged
* dt-bindings: cpufreq: qcom-cpufreq-nvmem: document IPQ5332
* dt-bindings: cpufreq: qcom-cpufreq-nvmem: document IPQ9574

Varadarajan Narayanan (8):
clk: qcom: clk-alpha-pll: introduce stromer plus ops
clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
clk: qcom: apss-ipq-pll: Fix 'l' value for ipq5332_pll_config
clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
cpufreq: qti: Enable cpufreq for ipq53xx
arm64: dts: qcom: ipq5332: populate the opp table based on the eFuse
cpufreq: qti: Introduce cpufreq for ipq95xx
arm64: dts: qcom: ipq9574: populate the opp table based on the eFuse

arch/arm64/boot/dts/qcom/ipq5332.dtsi | 19 ++++++++++--
arch/arm64/boot/dts/qcom/ipq9574.dtsi | 21 ++++++++++++-
drivers/clk/qcom/apss-ipq-pll.c | 4 +--
drivers/clk/qcom/apss-ipq6018.c | 53 +++++++++++++++++++++++++++++++-
drivers/clk/qcom/clk-alpha-pll.c | 57 +++++++++++++++++++++++++++++++++++
drivers/clk/qcom/clk-alpha-pll.h | 1 +
drivers/cpufreq/cpufreq-dt-platdev.c | 2 ++
drivers/cpufreq/qcom-cpufreq-nvmem.c | 16 ++++++++++
8 files changed, 166 insertions(+), 7 deletions(-)

--
2.7.4