ARM: 6277/1: mach-shmobile: Allow users to select HZ, default to 128
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / arch / arm / mach-shmobile / Kconfig
1 if ARCH_SHMOBILE
2
3 comment "SH-Mobile System Type"
4
5 config ARCH_SH7367
6 bool "SH-Mobile G3 (SH7367)"
7 select CPU_V6
8 select HAVE_CLK
9 select COMMON_CLKDEV
10 select GENERIC_CLOCKEVENTS
11
12 config ARCH_SH7377
13 bool "SH-Mobile G4 (SH7377)"
14 select CPU_V7
15 select HAVE_CLK
16 select COMMON_CLKDEV
17 select GENERIC_CLOCKEVENTS
18
19 config ARCH_SH7372
20 bool "SH-Mobile AP4 (SH7372)"
21 select CPU_V7
22 select HAVE_CLK
23 select COMMON_CLKDEV
24 select GENERIC_CLOCKEVENTS
25
26 comment "SH-Mobile Board Type"
27
28 config MACH_G3EVM
29 bool "G3EVM board"
30 depends on ARCH_SH7367
31 select ARCH_REQUIRE_GPIOLIB
32
33 config MACH_G4EVM
34 bool "G4EVM board"
35 depends on ARCH_SH7377
36 select ARCH_REQUIRE_GPIOLIB
37
38 config MACH_AP4EVB
39 bool "AP4EVB board"
40 depends on ARCH_SH7372
41 select ARCH_REQUIRE_GPIOLIB
42
43 comment "SH-Mobile System Configuration"
44
45 menu "Memory configuration"
46
47 config MEMORY_START
48 hex "Physical memory start address"
49 default "0x50000000" if MACH_G3EVM
50 default "0x40000000" if MACH_G4EVM
51 default "0x40000000" if MACH_AP4EVB
52 default "0x00000000"
53 ---help---
54 Tweak this only when porting to a new machine which does not
55 already have a defconfig. Changing it from the known correct
56 value on any of the known systems will only lead to disaster.
57
58 config MEMORY_SIZE
59 hex "Physical memory size"
60 default "0x08000000" if MACH_G3EVM
61 default "0x08000000" if MACH_G4EVM
62 default "0x10000000" if MACH_AP4EVB
63 default "0x04000000"
64 help
65 This sets the default memory size assumed by your kernel. It can
66 be overridden as normal by the 'mem=' argument on the kernel command
67 line.
68
69 endmenu
70
71 menu "Timer and clock configuration"
72
73 config SHMOBILE_TIMER_HZ
74 int "Kernel HZ (jiffies per second)"
75 range 32 1024
76 default "128"
77 help
78 Allows the configuration of the timer frequency. It is customary
79 to have the timer interrupt run at 1000 Hz or 100 Hz, but in the
80 case of low timer frequencies other values may be more suitable.
81 SH-Mobile systems using a 32768 Hz RCLK for clock events may want
82 to select a HZ value such as 128 that can evenly divide RCLK.
83 A HZ value that does not divide evenly may cause timer drift.
84
85 config SH_TIMER_CMT
86 bool "CMT timer driver"
87 default y
88 help
89 This enables build of the CMT timer driver.
90
91 endmenu
92
93 endif