diff mbox series

[v2,5/7] riscv: clk: Add CLINT clock to kendryte clock driver

Message ID 20200729095636.1077054-6-seanga2@gmail.com
State Superseded
Delegated to: Andes
Headers show
Series riscv: Clean up timer drivers | expand

Commit Message

Sean Anderson July 29, 2020, 9:56 a.m. UTC
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>
---
checkpatch still complains about this one, but I don't see any reason to
break it up even further. It doesn't make sense to me to split the header
file change from everything else.

Changes in v2:
- Split Kendryte binding changes into their own commit

 drivers/clk/kendryte/clk.c              | 4 ++++
 include/dt-bindings/clock/k210-sysctl.h | 1 +
 2 files changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/clk/kendryte/clk.c b/drivers/clk/kendryte/clk.c
index 981b3b7699..bb196961af 100644
--- a/drivers/clk/kendryte/clk.c
+++ b/drivers/clk/kendryte/clk.c
@@ -646,6 +646,10 @@  static int k210_clk_probe(struct udevice *dev)
 	REGISTER_GATE(K210_CLK_RTC,   "rtc",   in0);
 #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;
 }
 
diff --git a/include/dt-bindings/clock/k210-sysctl.h b/include/dt-bindings/clock/k210-sysctl.h
index 0e3ed3fb9f..fe852bbd92 100644
--- a/include/dt-bindings/clock/k210-sysctl.h
+++ b/include/dt-bindings/clock/k210-sysctl.h
@@ -55,5 +55,6 @@ 
 #define K210_CLK_OTP    43
 #define K210_CLK_RTC    44
 #define K210_CLK_ACLK   45
+#define K210_CLK_CLINT  46
 
 #endif /* CLOCK_K210_SYSCTL_H */