Hi Sean,
On Thu, Jul 23, 2020 at 9:57 PM Sean Anderson seanga2@gmail.com wrote:
On 7/23/20 9:50 AM, Bin Meng wrote:
Hi Sean,
On Wed, Jul 22, 2020 at 11:51 PM Sean Anderson seanga2@gmail.com wrote:
We may need to add a clock-frequency binding like for the K210.
Signed-off-by: Sean Anderson seanga2@gmail.com
This patch builds but has NOT been tested.
arch/riscv/dts/fu540-c000-u-boot.dtsi | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/dts/fu540-c000-u-boot.dtsi b/arch/riscv/dts/fu540-c000-u-boot.dtsi index afdb4f4402..e56bfc7595 100644 --- a/arch/riscv/dts/fu540-c000-u-boot.dtsi +++ b/arch/riscv/dts/fu540-c000-u-boot.dtsi @@ -55,8 +55,13 @@ }; clint@2000000 { compatible = "riscv,clint0";
interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7 &cpu1_intc 3 &cpu1_intc 7 &cpu2_intc 3 &cpu2_intc 7 &cpu3_intc 3 &cpu3_intc 7 &cpu4_intc 3 &cpu4_intc 7>;
interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7&cpu1_intc 3 &cpu1_intc 7&cpu2_intc 3 &cpu2_intc 7&cpu3_intc 3 &cpu3_intc 7&cpu4_intc 3 &cpu4_intc 7>; reg = <0x0 0x2000000 0x0 0xc0000>;clocks = <&prci PRCI_CLK_COREPLL>;This looks wrong to me. The CLINT timer frequency should come from the RTC node.
+Pragnesh Patel
+Sagar Kadam
On further review, I think you are right that this should be RTCCLK_FREQ.
Perhaps the clocks part should be moved into arch/riscv/dts/hifive-unleashed-a00-u-boot.dts and changed to something like
clocks = <&rtcclk>;
How does the device tree look like in the upstream Linux to work with the new CLINT timer driver?
Regards, Bin