Re: [PATCH v4 0/3] clk: ultrarisc: add DP1000 clock support

From: Brian Masney

Date: Tue Jul 21 2026 - 17:52:18 EST


Hi Jia,

On Mon, Jul 20, 2026 at 08:38:03AM +0800, Jia Wang via B4 Relay wrote:
> This series exports a small common clock helper and adds the devicetree
> binding and clock driver for the UltraRISC DP1000 SoC.
>
> The clock tree is driven by a SYSPLL and provides fixed-factor clocks for
> the subsystem and PCIe, divider-based root clocks for GMAC and the UART,
> I2C, and SPI blocks, and per-instance gate clocks for UART0-3, I2C0-3,
> and SPI0-1.
>
> Testing:
> - dt_binding_check and dtbs_check on ultrarisc,dp1000-clk
> - Kernel build for RISC-V and boot-tested on DP1000
> - Modules build test for CLK_ULTRARISC_DP1000
>
> Signed-off-by: Jia Wang <wangjia@xxxxxxxxxxxxx>
> ---
> Changes in v4:
> - Drop the initial clk_hw_get_rate() max-rate warning after setting the
> divider rate range.

I also see this in the diff between v3 and v4. Is this expected?

+++ b/drivers/clk/ultrarisc/clk-dp1000.c
@@ -0,0 +1,154 @@
@@ -309,8 +309,8 @@
+ .frac_mask = GENMASK(23, 0),
+ .m_mask = GENMASK(23, 16),
+ .n_mask = GENMASK(11, 6),
-+ .oddiv1_mask = GENMASK(4, 3),
-+ .oddiv2_mask = GENMASK(1, 0),
++ .oddiv1_mask = GENMASK(1, 0),
++ .oddiv2_mask = GENMASK(4, 3),

Brian