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Date: Thu, 18 Dec 2014 17:44:49 -0300
From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
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To: Roger Quadros <rogerq@ti.com>, Tony Lindgren <tony@atomide.com>
Subject: GPMC clock question
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Tony, Roger:

As far as I can see, the GPMC interface clock (GPMC_FCLK) is not
properly modeled in the devicetree. Instead, hwmod magic seems to be used.

arch/arm/mach-omap2/omap_hwmod_33xx_43xx_interconnect_data.c:
struct omap_hwmod_ocp_if am33xx_l3_s__gpmc = {
        .master         = &am33xx_l3_s_hwmod,
        .slave          = &am33xx_gpmc_hwmod,
        .clk            = "l3s_gclk",
        .addr           = am33xx_gpmc_addr_space,
        .user           = OCP_USER_MPU,
};

I'd like to know what would be the appropriate DT model for this clock.
Perhaps, as child of CORE_M4_CLK, divided by 2:

gpmc_fclk: gpmc_fclk {
                #clock-cells = <0>;
                compatible = "fixed-factor-clock";
                clocks = <&dpll_core_m4_ck>;
                clock-mult = <1>;
                clock-div = <2>;
        };

How does it look? Also, I'm wondering if this works OK when used with
the hwmod stuff.

Thanks a lot in advance!
-- 
Ezequiel Garcia, VanguardiaSur
www.vanguardiasur.com.ar