From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas.ab@samsung.com (Thomas Abraham) Date: Wed, 30 Jul 2014 13:37:41 +0530 Subject: [PATCH v9 4/6] ARM: Exynos: switch to using generic cpufreq driver for Exynos4210/5250/5420 In-Reply-To: <1406707663-16656-1-git-send-email-thomas.ab@samsung.com> References: <1406707663-16656-1-git-send-email-thomas.ab@samsung.com> Message-ID: <1406707663-16656-5-git-send-email-thomas.ab@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The new CPU clock type allows the use of generic CPUfreq drivers. So for Exynos4210/5250, switch to using generic cpufreq driver. For Exynos5420, which did not have CPUfreq driver support, enable the use of generic CPUfreq driver. Suggested-by: Tomasz Figa Cc: Kukjin Kim Signed-off-by: Thomas Abraham Reviewed-by: Tomasz Figa --- arch/arm/mach-exynos/exynos.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 493dbc2..e61bb36 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -281,6 +281,28 @@ static void __init exynos_init_irq(void) exynos_map_pmu(); } +static const struct of_device_id exynos_cpufreq_matches[] = { + { .compatible = "samsung,exynos5420", .data = "arm-bL-cpufreq-dt" }, + { .compatible = "samsung,exynos5250", .data = "cpufreq-cpu0" }, + { .compatible = "samsung,exynos4210", .data = "cpufreq-cpu0" }, + { .compatible = "samsung,exynos5440", .data = "exynos5440-cpufreq" }, + { /* sentinel */ } +}; + +static void __init exynos_cpufreq_init(void) +{ + struct device_node *root = of_find_node_by_path("/"); + const struct of_device_id *match; + + match = of_match_node(exynos_cpufreq_matches, root); + if (!match) { + platform_device_register_simple("exynos-cpufreq", -1, NULL, 0); + return; + } + + platform_device_register_simple(match->data, -1, NULL, 0); +} + static void __init exynos_dt_machine_init(void) { struct device_node *i2c_np; @@ -320,7 +342,7 @@ static void __init exynos_dt_machine_init(void) of_machine_is_compatible("samsung,exynos5250")) platform_device_register(&exynos_cpuidle); - platform_device_register_simple("exynos-cpufreq", -1, NULL, 0); + exynos_cpufreq_init(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } -- 1.7.9.5