With OMAP3+ and AM33xx supported SoC having defined CPU device tree entries with operating-points defined, we can now use the SoC generic cpufreq-cpu0 driver by registering appropriate device.
As part of this change, add dummy clock node to use cpufreq-cpu0. This is an suggested solution till we have OMAP clock nodes in DT. Once the DT conversion is complete, we can then do: clocks = <&dpll_mpu_ck>; or the SoC specific equivalent. Inspired by patch: https://patchwork.kernel.org/patch/2067841/ now made generic. Cc: Kevin Hilman <khil...@deeprootsystems.com> Cc: Jon Hunter <jon-hun...@ti.com> Cc: "Benoît Cousson" <b-cous...@ti.com> Cc: Santosh Shilimkar <santosh.shilim...@ti.com> Cc: Shawn Guo <shawn....@linaro.org> Cc: Keerthy <j-keer...@ti.com> Cc: linux-o...@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-arm-ker...@lists.infradead.org Cc: cpuf...@vger.kernel.org Cc: linux...@vger.kernel.org Signed-off-by: Nishanth Menon <n...@ti.com> --- Changes in V2: - no functional changes V1: https://patchwork.kernel.org/patch/2273621/ arch/arm/mach-omap2/board-generic.c | 5 +++++ arch/arm/mach-omap2/cclock33xx_data.c | 2 +- arch/arm/mach-omap2/cclock3xxx_data.c | 3 ++- arch/arm/mach-omap2/cclock44xx_data.c | 3 ++- 4 files changed, 10 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index afa509a..5b147ef 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -49,6 +49,11 @@ static void __init omap_generic_init(void) omap4_panda_display_init_of(); else if (of_machine_is_compatible("ti,omap4-sdp")) omap_4430sdp_display_init_of(); + + if (IS_ENABLED(CONFIG_GENERIC_CPUFREQ_CPU0)) { + struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; + platform_device_register_full(&devinfo); + } } #ifdef CONFIG_SOC_OMAP2420 diff --git a/arch/arm/mach-omap2/cclock33xx_data.c b/arch/arm/mach-omap2/cclock33xx_data.c index 476b820..cf7e736 100644 --- a/arch/arm/mach-omap2/cclock33xx_data.c +++ b/arch/arm/mach-omap2/cclock33xx_data.c @@ -852,7 +852,7 @@ static struct omap_clk am33xx_clks[] = { CLK(NULL, "dpll_core_m5_ck", &dpll_core_m5_ck, CK_AM33XX), CLK(NULL, "dpll_core_m6_ck", &dpll_core_m6_ck, CK_AM33XX), CLK(NULL, "dpll_mpu_ck", &dpll_mpu_ck, CK_AM33XX), - CLK("cpu0", NULL, &dpll_mpu_ck, CK_AM33XX), + CLK("cpufreq-cpu0.0", NULL, &dpll_mpu_ck, CK_AM33XX), CLK(NULL, "dpll_mpu_m2_ck", &dpll_mpu_m2_ck, CK_AM33XX), CLK(NULL, "dpll_ddr_ck", &dpll_ddr_ck, CK_AM33XX), CLK(NULL, "dpll_ddr_m2_ck", &dpll_ddr_m2_ck, CK_AM33XX), diff --git a/arch/arm/mach-omap2/cclock3xxx_data.c b/arch/arm/mach-omap2/cclock3xxx_data.c index 4579c3c..5a5b471 100644 --- a/arch/arm/mach-omap2/cclock3xxx_data.c +++ b/arch/arm/mach-omap2/cclock3xxx_data.c @@ -3501,7 +3501,8 @@ static struct omap_clk omap3xxx_clks[] = { CLK(NULL, "uart4_ick", &uart4_ick_am35xx, CK_AM35XX), CLK(NULL, "timer_32k_ck", &omap_32k_fck, CK_3XXX), CLK(NULL, "timer_sys_ck", &sys_ck, CK_3XXX), - CLK(NULL, "cpufreq_ck", &dpll1_ck, CK_3XXX), + CLK(NULL, "cpufreq_ck", &dpll1_ck, CK_3XXX), /* used in non-device tree boot */ + CLK("cpufreq-cpu0.0", NULL, &dpll1_ck, CK_3XXX), /* used in device tree boot */ }; static const char *enable_init_clks[] = { diff --git a/arch/arm/mach-omap2/cclock44xx_data.c b/arch/arm/mach-omap2/cclock44xx_data.c index 3d58f33..bcea785 100644 --- a/arch/arm/mach-omap2/cclock44xx_data.c +++ b/arch/arm/mach-omap2/cclock44xx_data.c @@ -1660,7 +1660,8 @@ static struct omap_clk omap44xx_clks[] = { CLK("4013a000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), CLK("4013c000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), CLK("4013e000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), - CLK(NULL, "cpufreq_ck", &dpll_mpu_ck, CK_443X), + CLK(NULL, "cpufreq_ck", &dpll_mpu_ck, CK_443X), /* used in non-device tree boot */ + CLK("cpufreq-cpu0.0", NULL, &dpll_mpu_ck, CK_443X), /* used in device tree boot */ }; int __init omap4xxx_clk_init(void) -- 1.7.9.5 _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss
