[PATCH 12/13] cpufreq: Add cpufreq driver for Tegra124
From: Tuomas Tynkkynen <hidden>
Date: 2014-07-11 14:14:17
Also in:
linux-devicetree, linux-pm, linux-tegra, lkml
From: Tuomas Tynkkynen <hidden>
Date: 2014-07-11 14:14:17
Also in:
linux-devicetree, linux-pm, linux-tegra, lkml
On 11/07/14 07:35, Viresh Kumar wrote:
Hi Tuomas, On 11 July 2014 03:12, Tuomas Tynkkynen [off-list ref] wrote:quoted
Add a new cpufreq driver for Tegra124. Instead of using the PLLX as the CPU clocksource, switch immediately to the DFLL. It allows the use of higher clock rates, and will automatically scale the CPU voltage as well. We also rely on the DFLL driver to determine the CPU clock frequencies that the chip supports, so that we can directly build a cpufreq table with the OPP library helper dev_pm_opp_init_cpufreq_table. This driver is a completely independent of the old cpufreq driver (tegra-cpufreq), which is only used on Tegra20. Signed-off-by: Tuomas Tynkkynen <redacted>Please reuse cpufreq-cpu0 instead of adding a new driver. Similar is being adopted by all platforms now: krait, mvebu, etc..
Sure, I can do the CPU clock parent change first and then instantiate the cpufreq-cpu0 driver, like highbank-cpufreq. That'll depend on the patch 'cpufreq: cpu0: OPPs can be populated at runtime' from your 'Extend support beyond CPU0' series though, any idea when that patch will land in? -- nvpublic