From mboxrd@z Thu Jan 1 00:00:00 1970 From: rogerq@ti.com (Roger Quadros) Date: Wed, 8 Jan 2014 16:34:18 +0530 Subject: [PATCH v4 1/5] mfd: omap-usb-host: Update DT clock binding information In-Reply-To: <4840680.vVGZYBJBID@wuerfel> References: <1389161742-10533-1-git-send-email-rogerq@ti.com> <4812867.NuB3hNkV9d@wuerfel> <52CD2807.9000200@ti.com> <4840680.vVGZYBJBID@wuerfel> Message-ID: <52CD30B2.2080807@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 01/08/2014 04:10 PM, Arnd Bergmann wrote: > On Wednesday 08 January 2014 15:57:19 Roger Quadros wrote: >> It is a clock gate defined like so in the DT clock data >> >> on OMAP4 >> init_60m_fclk: init_60m_fclk { >> #clock-cells = <0>; >> compatible = "ti,divider-clock"; >> clocks = <&dpll_usb_m2_ck>; >> reg = <0x0104>; >> ti,dividers = <1>, <8>; >> }; >> >> on OMAP5 >> l3init_60m_fclk: l3init_60m_fclk { >> #clock-cells = <0>; >> compatible = "ti,divider-clock"; >> clocks = <&dpll_usb_m2_ck>; >> reg = <0x0104>; >> ti,dividers = <1>, <8>; >> }; >> >> So you can see that it is the same thing with a different name. > > Right, but init_60m_fclk is the name of the clock output of the > divider here, which is /not/ what you should put in the "clock-names" > property of the consumer. The clock input name should reflect what > the clock is used for instead. Ah, now I get it. :). I agree that the name should reflect the function. Looking more closely, the driver doesn't enable/disable the init_60m_fclk but just uses it to configure the parent of utmi_p1_gfclk which is a clock input to the USB module. Based on this I would call it "refclk_int" for internal reference clock. cheers, -roger