| From: |
| Sumit Gupta <sumitg-AT-nvidia.com> |
| To: |
| <rafael-AT-kernel.org>, <viresh.kumar-AT-linaro.org>, <robh+dt-AT-kernel.org>, <krzk+dt-AT-kernel.org>, <treding-AT-nvidia.com>, <jonathanh-AT-nvidia.com>, <linux-pm-AT-vger.kernel.org>, <linux-tegra-AT-vger.kernel.org>, <devicetree-AT-vger.kernel.org>, <linux-kernel-AT-vger.kernel.org> |
| Subject: |
| [Patch v3 0/4] Tegra234 cpufreq driver support |
| Date: |
| Mon, 04 Apr 2022 17:47:09 +0530 |
| Message-ID: |
| <20220404121713.22461-1-sumitg@nvidia.com> |
| Cc: |
| <ksitaraman-AT-nvidia.com>, <sanjayc-AT-nvidia.com>, <bbasu-AT-nvidia.com>, <sumitg-AT-nvidia.com> |
| Archive-link: |
| Article |
This patchset adds driver support for Tegra234 cpufreq.
Also, added soc data and ops to support multiple SoC's and variants
which have similar logic to {get|set} cpu frequency as Tegra194 in
the same driver.
From cpufreq point, main difference between Tegra194 and Tegra234 are:
1) Tegra234 uses MMIO for frequency requests and not sysreg like T194.
2) MPIDR affinity info in Tegra234 is different from Tegra194.
3) Register bits of pllp_clk_count and core_clk_count are swapped.
So, added ops hooks for Tegra234.
---
v2 -> v3:
- used CPU COMPLEX CLUSTER name in binding document.
- reordered the patches.
v1 -> v2:
- added nvidia,tegra-ccplex-cluster.yaml binding doc
- changed compatible check to 'soc->actmon_cntr_base' field of soc data
Sumit Gupta (4):
dt-bindings: Document Tegra CCPLEX Cluster
cpufreq: tegra194: add soc data to support multiple soc
cpufreq: tegra194: Add support for Tegra234
arm64: tegra: add node for tegra234 cpufreq
.../tegra/nvidia,tegra-ccplex-cluster.yaml | 52 ++++
arch/arm64/boot/dts/nvidia/tegra234.dtsi | 7 +
drivers/cpufreq/tegra194-cpufreq.c | 246 +++++++++++++++---
3 files changed, 268 insertions(+), 37 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml
--
2.17.1
