Re: Speedstep-centrino problems

[Galin Yordanov <galin-Dn6zUBO643CDvotElmWtJA@public.gmane.org>]

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Hello,

I have Acer TM4500 with Centrino 1.6 (Dothan)and i had the same problem ..
then i found this patch (attached), cannot remember where i found it but it 
works ;)

Regards,
Galin
On Thursday 10 February 2005 04:38 am, Simon Moore wrote:
> Hi,
>
> I'm trying to get acpi cpu throttling working for my Dell Inspiron 510m
> with a Pentium M Centrino 1.6 Ghz cpu.
>
> I have tried a number of possibilites but have not got anywhere. I have
> an open case over at the gentoo forums but we have not had success in
> resolving this problem.
>
> This is my last ditch attempt to try and find a solution to this
> problem. I think I have exhausted most possible avenues so I'm trying to
> get some kernel hacker on board and help me with this.
>
> I would very much appreciate it if someone could take a look at this
> thread and possbily come up with a suggestion of what might be causing
> this. (http://forums.gentoo.org/viewtopic.php?p=2076710) I have a lot of
> info in that thread that you should find useful but if there's any other
> info you require I'll post it tonight.
>
> For what it's worth I hope it intrigues some of you enough to help me
> out.
>
> Thanks all the same,
>
> Regards,
>
> Saimon
>
>
> --------------------------
> Saimon Moore
> Departamento TI
> CondisLine e-Commerce S.A.
>
> telf./fax: 93 565 3400 ext. 473 / 935752325
> http://www.condisline.com
> mailto://simon_moore-HnN13UdsTkzz1n+OaKNE4w@public.gmane.org

-- 
[In Linux We Trust]
Galin Yordanov
galin-Dn6zUBO643CDvotElmWtJA@public.gmane.org

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--- ./arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c.orig	2004-08-06 18:42:15.000000000 +0800
+++ ./arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c	2004-08-06 18:44:28.000000000 +0800
@@ -195,6 +195,82 @@
 	OP(1700, 1484),
 	{ .frequency = CPUFREQ_TABLE_END }
 };
+
+#undef OP
+
+/* Dothan processor datasheet 30218903.pdf defines 4 voltages for each
+   frequency (VID#A through VID#D) - this macro allows us to define all
+   of these but we only use the VID#C voltages at compile time - this may
+   need some work if we want to select the voltage profile at runtime. */
+
+#define OP(mhz, mva, mvb, mvc, mvd)					\
+	{								\
+		.frequency = (mhz) * 1000,				\
+		.index = (((mhz)/100) << 8) | ((mvc - 700) / 16)       	\
+	}
+
+/* Intel Pentium M processor 715 / 1.50GHz (Dothan) */
+static struct cpufreq_frequency_table dothan_1500[] =
+{
+	OP( 600,  988,  988,  988,  988),
+	OP( 800, 1068, 1068, 1068, 1052),
+	OP(1000, 1148, 1148, 1132, 1116),
+	OP(1200, 1228, 1212, 1212, 1180),
+	OP(1500, 1340, 1324, 1308, 1276),
+	{ .frequency = CPUFREQ_TABLE_END }
+};
+
+/* Intel Pentium M processor 725 / 1.60GHz (Dothan) */
+static struct cpufreq_frequency_table dothan_1600[] =
+{
+	OP( 600,  988,  988,  988,  988),
+	OP( 800, 1068, 1068, 1052, 1052),
+	OP(1000, 1132, 1132, 1116, 1116),
+	OP(1200, 1212, 1196, 1180, 1164),
+	OP(1400, 1276, 1260, 1244, 1228),
+	OP(1600, 1340, 1324, 1308, 1276),
+	{ .frequency = CPUFREQ_TABLE_END }
+};
+
+/* Intel Pentium M processor 735 / 1.70GHz (Dothan) */
+static struct cpufreq_frequency_table dothan_1700[] =
+{
+	OP( 600,  988,  988,  988,  988),
+	OP( 800, 1052, 1052, 1052, 1052),
+	OP(1000, 1116, 1116, 1116, 1100),
+	OP(1200, 1180, 1180, 1164, 1148),
+	OP(1400, 1244, 1244, 1228, 1212),
+	OP(1700, 1340, 1324, 1308, 1276),
+	{ .frequency = CPUFREQ_TABLE_END }
+};
+
+/* Intel Pentium M processor 745 / 1.80GHz (Dothan) */
+static struct cpufreq_frequency_table dothan_1800[] =
+{
+	OP( 600,  988,  988,  988,  988),
+	OP( 800, 1052, 1052, 1052, 1036),
+	OP(1000, 1116, 1100, 1100, 1084),
+	OP(1200, 1164, 1164, 1148, 1132),
+	OP(1400, 1228, 1212, 1212, 1180),
+	OP(1600, 1292, 1276, 1260, 1228),
+	OP(1800, 1340, 1324, 1308, 1276),
+	{ .frequency = CPUFREQ_TABLE_END }
+};
+
+/* Intel Pentium M processor 755 / 2.00GHz (Dothan) */
+static struct cpufreq_frequency_table dothan_2000[] =
+{
+	OP( 600,  988,  988,  988,  988),
+	OP( 800, 1052, 1036, 1036, 1036),
+	OP(1000, 1100, 1084, 1084, 1084),
+	OP(1200, 1148, 1132, 1132, 1116),
+	OP(1400, 1196, 1180, 1180, 1164),
+	OP(1600, 1244, 1228, 1228, 1196),
+	OP(1800, 1292, 1276, 1276, 1244),
+	OP(2000, 1340, 1324, 1308, 1276),
+	{ .frequency = CPUFREQ_TABLE_END }
+};
+
 #undef OP
 
 #define _BANIAS(cpuid, max, name)	\
@@ -205,6 +281,13 @@
 }
 #define BANIAS(max)	_BANIAS(&cpu_ids[CPU_BANIAS], max, #max)
 
+#define DOTHAN(cpuid, max, name)	\
+{	.cpu_id		= cpuid,	\
+	.model_name	= "Intel(R) Pentium(R) M processor " name "GHz", \
+	.max_freq	= (max)*1000,	\
+	.op_points	= dothan_##max,	\
+}
+
 /* CPU models, their operating frequency range, and freq/voltage
    operating points */
 static struct cpu_model models[] =
@@ -218,6 +301,11 @@
 	BANIAS(1500),
 	BANIAS(1600),
 	BANIAS(1700),
+	DOTHAN(&cpu_ids[CPU_DOTHAN_B0], 1500, "1.50"),
+	DOTHAN(&cpu_ids[CPU_DOTHAN_B0], 1600, "1.60"),
+	DOTHAN(&cpu_ids[CPU_DOTHAN_B0], 1700, "1.70"),
+	DOTHAN(&cpu_ids[CPU_DOTHAN_B0], 1800, "1.80"),
+	DOTHAN(&cpu_ids[CPU_DOTHAN_B0], 2000, "2.00"),
 
 	/* NULL model_name is a wildcard */
 	{ &cpu_ids[CPU_DOTHAN_A1], NULL, 0, NULL },
@@ -227,6 +315,7 @@
 };
 #undef _BANIAS
 #undef BANIAS
+#undef DOTHAN
 
 static int centrino_cpu_init_table(struct cpufreq_policy *policy)
 {