[U-Boot] [PATCH 01/13] x86: tsc: Add Airmont reference clock values

Bin Meng bmeng.cn at gmail.com
Wed Aug 16 05:41:50 UTC 2017


Per the Intel 64 and IA-32 Architecture Software Developer's Manual,
add the reference clock for Intel Atom Processors based on the Airmont
Microarchitecture (Braswell).

This keeps in sync with Linux kernel commit:
  6fcb41c: x86/tsc_msr: Add Airmont reference clock values

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
---

 drivers/timer/tsc_timer.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/timer/tsc_timer.c b/drivers/timer/tsc_timer.c
index 4d1fc9c..77040af 100644
--- a/drivers/timer/tsc_timer.c
+++ b/drivers/timer/tsc_timer.c
@@ -18,7 +18,7 @@
 #include <asm/msr.h>
 #include <asm/u-boot-x86.h>
 
-#define MAX_NUM_FREQS	8
+#define MAX_NUM_FREQS	9
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -40,17 +40,20 @@ struct freq_desc {
 
 static struct freq_desc freq_desc_tables[] = {
 	/* PNW */
-	{ 6, 0x27, 0, { 0, 0, 0, 0, 0, 99840, 0, 83200 } },
+	{ 6, 0x27, 0, { 0, 0, 0, 0, 0, 99840, 0, 83200, 0 } },
 	/* CLV+ */
-	{ 6, 0x35, 0, { 0, 133200, 0, 0, 0, 99840, 0, 83200 } },
+	{ 6, 0x35, 0, { 0, 133200, 0, 0, 0, 99840, 0, 83200, 0 } },
 	/* TNG - Intel Atom processor Z3400 series */
-	{ 6, 0x4a, 1, { 0, 100000, 133300, 0, 0, 0, 0, 0 } },
+	{ 6, 0x4a, 1, { 0, 100000, 133300, 0, 0, 0, 0, 0, 0 } },
 	/* VLV2 - Intel Atom processor E3000, Z3600, Z3700 series */
-	{ 6, 0x37, 1, { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 } },
+	{ 6, 0x37, 1, { 83300, 100000, 133300, 116700, 80000, 0, 0, 0, 0 } },
 	/* ANN - Intel Atom processor Z3500 series */
-	{ 6, 0x5a, 1, { 83300, 100000, 133300, 100000, 0, 0, 0, 0 } },
+	{ 6, 0x5a, 1, { 83300, 100000, 133300, 100000, 0, 0, 0, 0, 0 } },
+	/* AMT - Intel Atom processor X7-Z8000 and X5-Z8000 series */
+	{ 6, 0x4c, 1, { 83300, 100000, 133300, 116700,
+			80000, 93300, 90000, 88900, 87500 } },
 	/* Ivybridge */
-	{ 6, 0x3a, 2, { 0, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 6, 0x3a, 2, { 0, 0, 0, 0, 0, 0, 0, 0, 0 } },
 };
 
 static int match_cpu(u8 family, u8 model)
-- 
2.9.2



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