linux-kernel - [PATCH v3 1/2] ARM: imx6sl: Add cpu frequency scaling support

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Date:	Thu, 19 Dec 2013 20:15:28 -0800
From:	John Tobias <john.tobias.ph@...il.com>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, cpufreq@...r.kernel.org,
	rjw@...ysocki.net, shawn.guo@...aro.org, festevam@...il.com,
	b20788@...escale.com, viresh.kumar@...aro.org
Cc:	John Tobias <john.tobias.ph@...il.com>
Subject: [PATCH v3 1/2] ARM: imx6sl: Add cpu frequency scaling support

Re-use imx6q cpufreq driver to support cpu
frequency scaling on imx6sl.

Signed-off-by: John Tobias <john.tobias.ph@...il.com>
---
 arch/arm/mach-imx/mach-imx6sl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c
index 2f952e3..3072e15 100644
--- a/arch/arm/mach-imx/mach-imx6sl.c
+++ b/arch/arm/mach-imx/mach-imx6sl.c
@@ -34,6 +34,13 @@ static void __init imx6sl_fec_init(void)
 	}
 }
 
+static void __init imx6sl_init_late(void)
+{
+	/* imx6sl reuses imx6q cpufreq driver */
+	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
+		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
+}
+
 static void __init imx6sl_init_machine(void)
 {
 	struct device *parent;
@@ -70,6 +77,7 @@ DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
 	.map_io		= debug_ll_io_init,
 	.init_irq	= imx6sl_init_irq,
 	.init_machine	= imx6sl_init_machine,
+	.init_late      = imx6sl_init_late,
 	.dt_compat	= imx6sl_dt_compat,
 	.restart	= mxc_restart,
 MACHINE_END
-- 
1.8.3.2

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