From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: [PATCH V3 1/2] ARM: OMAP3+: use cpu0-cpufreq driver in device tree supported boot Date: Thu, 28 Mar 2013 16:52:55 -0500 Message-ID: <1364507576-19345-2-git-send-email-nm@ti.com> References: <1364507576-19345-1-git-send-email-nm@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1364507576-19345-1-git-send-email-nm@ti.com> Sender: cpufreq-owner@vger.kernel.org To: linux-omap@vger.kernel.org Cc: Rob Herring , cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, Nishanth Menon , Kevin Hilman , Rajendra Nayak , Paul Walmsley , =?UTF-8?q?Beno=C3=AEt=20Cousson?= , Jon Hunter , Keerthy , Santosh Shilimkar , Shawn Guo List-Id: linux-omap@vger.kernel.org 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 device tree. Once the OMAP device tree conversion is complete, we can then do: clocks =3D <&dpll_mpu_ck>; or the SoC specific equivalent. Inspired by patch: https://patchwork.kernel.org/patch/2067841/ now made generic. Cc: Kevin Hilman Cc: Rajendra Nayak Cc: Paul Walmsley Cc: "Beno=C3=AEt Cousson" Cc: Jon Hunter Cc: Keerthy Cc: Santosh Shilimkar Cc: Shawn Guo Signed-off-by: Nishanth Menon --- Changes in v3: - modified CC list. - no functional change V2: https://patchwork.kernel.org/patch/2303471/ V1: https://patchwork.kernel.org/patch/2273571/ 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 =3D { .name =3D "cpufreq-cpu0", = }; + platform_device_register_full(&devinfo); + } } =20 #ifdef CONFIG_SOC_OMAP2420 diff --git a/arch/arm/mach-omap2/cclock33xx_data.c b/arch/arm/mach-omap= 2/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[] =3D { 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-omap= 2/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[] =3D { 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 tr= ee boot */ + CLK("cpufreq-cpu0.0", NULL, &dpll1_ck, CK_3XXX), /* used in device tr= ee boot */ }; =20 static const char *enable_init_clks[] =3D { diff --git a/arch/arm/mach-omap2/cclock44xx_data.c b/arch/arm/mach-omap= 2/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[] =3D { 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 */ }; =20 int __init omap4xxx_clk_init(void) --=20 1.7.9.5