Re: [PATCH 4/8] pwm: axi-pwmgen: Enable clocks before accessing hardware registers in probe()

From: Uwe Kleine-König

Date: Thu Nov 05 2026 - 11:08:26 EST


On Thu, Nov 05, 2026 at 02:38:06PM +0000, Lee Jones wrote:
> axi_pwmgen_probe() calls axi_pwmgen_setup(), which reads and writes MMIO
> registers to verify the IP core version and determine the channel count,
> before acquiring and enabling axi_clk. If the bootloader leaves the AXI
> peripheral clock gated, accessing the registers causes an unclocked bus
> access fault.

Do you have the hardware? Or what convinced you that an access fault
happens?

Best regards
Uwe

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