Messages in this thread | | | Date | Thu, 13 Jun 2013 09:43:55 -0600 | From | Stephen Warren <> | Subject | Re: [PATCH 10/11] cpufreq: tegra: select CPU_FREQ_TABLE for ARCH_TEGRA |
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On 06/12/2013 10:24 PM, Viresh Kumar wrote: > On 12 June 2013 21:20, Stephen Warren <swarren@wwwdotorg.org> wrote: >> On 06/12/2013 02:15 AM, Viresh Kumar wrote: >>> ARCH_TEGRA selects ARCH_HAS_CPUFREQ, so CPUFREQ will be enabled for all variants >>> of TEGRA. CPUFreq driver for tegra is enabled if ARCH_TEGRA is selected. Driver >>> uses APIs from freq_table.c and so we must select CPU_FREQ_TABLE for ARCH_TEGRA. >>> >>> This also removes select CPU_FREQ_TABLE from individual tegra variants. >> >> I guess the real issue here is that drivers/cpufreq/tegra-cpufreq.c gets >> built based on ARCH_TEGRA, which doesn't depend on nor select CPU_FREQ >> itself, so: >> >> select CPU_FREQ_TABLE if CPU_FREQ >> >> ... isn't guaranteed to fire. >> >> The correct solution seems to be: >> >> * Add CONFIG_ARM_TEGRA_CPUFREQ to drivers/cpufreq/Kconfig.arm. >> * Make that Kconfig option selct CPU_FREQ_TABLE. >> * Make that Kconfig option be def_bool ARCH_TEGRA. >> * Modify drivers/cpufreq/Makefile to build tegra-cpufreq.c based on that. >> * Remove all the cpufreq-related stuff from arch/arm/mach-tegra/Kconfig. >> >> That way, tegra-cpufreq.c can't be built if !CPU_FREQ, and Tegra's >> cpufreq works the same way as all the other cpufreq drivers. > > Hmmm. check this out (attached too for you to test):
This certainly generates the correct .config when I "make tegra_defconfig" after applying it, and a build after disabling CPU_FREQ links OK, so,
Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com>
(I assume this patch would go through the cpufreq tree?)
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