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riscv: clk: Add CLINT clock to kendryte clock driver

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Another "virtual" clock (in the sense that it isn't configurable). This
could possibly be done as a clock in the device tree, but I think this is a
bit cleaner.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
This commit is contained in:
Sean Anderson 2020-09-28 10:52:27 -04:00 • committed by Andes
parent e5ca9a7523
commit a952c3a454
2 changed files with 5 additions and 0 deletions
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4
drivers/clk/kendryte/clk.c
View file

@ -646,6 +646,10 @@ static int k210_clk_probe(struct udevice *dev)
REGISTER_GATE(K210_CLK_RTC, "rtc", in0); REGISTER_GATE(K210_CLK_RTC, "rtc", in0);
#undef REGISTER_GATE #undef REGISTER_GATE
/* The MTIME register in CLINT runs at one 50th the CPU clock speed */
clk_dm(K210_CLK_CLINT,
clk_register_fixed_factor(NULL, "clint", "cpu", 0, 1, 50));
return 0; return 0;
} }

1
include/dt-bindings/clock/k210-sysctl.h
View file

@ -55,5 +55,6 @@
#define K210_CLK_OTP 43 #define K210_CLK_OTP 43
#define K210_CLK_RTC 44 #define K210_CLK_RTC 44
#define K210_CLK_ACLK 45 #define K210_CLK_ACLK 45
#define K210_CLK_CLINT 46
#endif /* CLOCK_K210_SYSCTL_H */ #endif /* CLOCK_K210_SYSCTL_H */