[GIT PULL] SPEAr clk updates for v-3.5

[Shawn Guo]

On Thu, May 10, 2012 at 10:33:24PM -0700, Olof Johansson wrote:
> How about adding the __must_check patch on your for-next branch for a
> bit, so we can find and fix build fallout on the arm-soc branches
> through linux-next, maintainers can add build fixes that we pick up
> and then, after that, the __must_check fix can go upstream? That
> maintains bisectability on the branches we already have and should
> avoid more non-checking code to be introduced down the road.
> 
The function clk_register_clkdev is created to run-time register clk
lookup.  Mostly the users of the function (platform clk code) will
have a long list like the below (arch/arm/mach-imx/clk-imx6q.c).

        clk_register_clkdev(clk[mmdc_ch0_axi], NULL, "mmdc_ch0_axi");
        clk_register_clkdev(clk[mmdc_ch1_axi], NULL, "mmdc_ch1_axi");
        clk_register_clkdev(clk[gpt_ipg], "ipg", "imx-gpt.0");
        clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0");
        clk_register_clkdev(clk[twd], NULL, "smp_twd");
        clk_register_clkdev(clk[usboh3], NULL, "usboh3");
        clk_register_clkdev(clk[uart_serial], "per", "2020000.serial");
        clk_register_clkdev(clk[uart_ipg], "ipg", "2020000.serial");
        clk_register_clkdev(clk[uart_serial], "per", "21e8000.serial");
        clk_register_clkdev(clk[uart_ipg], "ipg", "21e8000.serial");
        clk_register_clkdev(clk[uart_serial], "per", "21ec000.serial");
        clk_register_clkdev(clk[uart_ipg], "ipg", "21ec000.serial");
        clk_register_clkdev(clk[uart_serial], "per", "21f0000.serial");
        clk_register_clkdev(clk[uart_ipg], "ipg", "21f0000.serial");
        clk_register_clkdev(clk[uart_serial], "per", "21f4000.serial");
        clk_register_clkdev(clk[uart_ipg], "ipg", "21f4000.serial");
        clk_register_clkdev(clk[enet], NULL, "2188000.ethernet");
        clk_register_clkdev(clk[usdhc1], NULL, "2190000.usdhc");
        clk_register_clkdev(clk[usdhc2], NULL, "2194000.usdhc");
        clk_register_clkdev(clk[usdhc3], NULL, "2198000.usdhc");
        clk_register_clkdev(clk[usdhc4], NULL, "219c000.usdhc");
        clk_register_clkdev(clk[i2c1], NULL, "21a0000.i2c");
        clk_register_clkdev(clk[i2c2], NULL, "21a4000.i2c");
        clk_register_clkdev(clk[i2c3], NULL, "21a8000.i2c");
        clk_register_clkdev(clk[ecspi1], NULL, "2008000.ecspi");
        clk_register_clkdev(clk[ecspi2], NULL, "200c000.ecspi");
        clk_register_clkdev(clk[ecspi3], NULL, "2010000.ecspi");
        clk_register_clkdev(clk[ecspi4], NULL, "2014000.ecspi");
        clk_register_clkdev(clk[ecspi5], NULL, "2018000.ecspi");
        clk_register_clkdev(clk[sdma], NULL, "20ec000.sdma");
        clk_register_clkdev(clk[dummy], NULL, "20bc000.wdog");
        clk_register_clkdev(clk[dummy], NULL, "20c0000.wdog");
        clk_register_clkdev(clk[ssi1_ipg], NULL, "2028000.ssi");
        clk_register_clkdev(clk[cko1_sel], "cko1_sel", NULL);
        clk_register_clkdev(clk[ahb], "ahb", NULL);
        clk_register_clkdev(clk[cko1], "cko1", NULL);

We probably do not want to make the whole clk initialization fail on
individual clk_register_clkdev call, but just give an error message and
continue trying to boot.  In that case, clk_register_clkdev can just
do the job to save users from return checking on every single call in
that long list?

-- 
Regards,
Shawn