Hi Sergei,
On Wed, Mar 23, 2011 at 17:39:44, Sergei Shtylyov wrote:
> > diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
> > index 68fe4c2..276199d 100644
> > --- a/arch/arm/mach-davinci/da850.c
> > +++ b/arch/arm/mach-davinci/da850.c
> > @@ -373,6 +373,14 @@ static struct clk spi1_clk = {
> > .flags = DA850_CLK_ASYNC3,
> > };
> >
> > +static struct clk sata_clk = {
> > + .name = "sata",
> > + .parent =&pll0_sysclk2,
> > + .lpsc = DA850_LPSC1_SATA,
> > + .gpsc = 1,
> > + .flags = PSC_FORCE,
> > +};
> > +
> > static struct clk_lookup da850_clks[] = {
> > CLK(NULL, "ref", &ref_clk),
> > CLK(NULL, "pll0", &pll0_clk),
> > @@ -419,6 +427,7 @@ static struct clk_lookup da850_clks[] = {
> > CLK(NULL, "usb20", &usb20_clk),
> > CLK("spi_davinci.0", NULL, &spi0_clk),
> > CLK("spi_davinci.1", NULL, &spi1_clk),
> > + CLK("ahci", NULL, &sata_clk),
> > CLK(NULL, NULL, NULL),
> > };
>
> I'd put the above into a separate patch...
Why should addition of clock data not be in the same patch
as the one which adds platform resources etc? It is not a big
deal to change, but I would like to know why you request this.
>
> > diff --git a/arch/arm/mach-davinci/devices-da8xx.c
> > b/arch/arm/mach-davinci/devices-da8xx.c
> > index 625d4b6..e061396 100644
> > --- a/arch/arm/mach-davinci/devices-da8xx.c
> > +++ b/arch/arm/mach-davinci/devices-da8xx.c
> [...]
> > @@ -834,3 +836,139 @@ int __init da8xx_register_spi(int instance, struct
> > spi_board_info *info,
> [...]
> > +/* Supported DA850 SATA crystal frequencies */
> > +#define KHZ_TO_HZ(freq) ((freq) * 1000)
> > +static unsigned long da850_sata_xtal[] = {
> > + KHZ_TO_HZ(300000),
> > + KHZ_TO_HZ(250000),
> > + 0, /* Reserved */
>
> Why reserve a place for it at all?
Because then this table maps one-to-one to the hardware
defined table. This in turn keeps the init code pretty
simple. Plus, if and when hardware adds support for a
crystal there, the changes to rest of the code are minimal.
>
> > + KHZ_TO_HZ(187500),
> > + KHZ_TO_HZ(150000),
> > + KHZ_TO_HZ(125000),
> > + KHZ_TO_HZ(120000),
> > + KHZ_TO_HZ(100000),
> > + KHZ_TO_HZ(75000),
> > + KHZ_TO_HZ(60000),
> > +};
> > +
> > +static int da850_sata_init(struct device *dev, void __iomem *addr)
> > +{
> > + int i, ret;
> > + unsigned int val;
> > +
> > + da850_sata_clk = clk_get(dev, NULL);
> > + if (IS_ERR(da850_sata_clk))
> > + return PTR_ERR(da850_sata_clk);
> > +
> > + ret = clk_enable(da850_sata_clk);
> > + if (ret)
> > + goto err0;
> > +
> > + /* Enable SATA clock receiver */
> > + val = __raw_readl(DA8XX_SYSCFG1_VIRT(DA8XX_PWRDN_REG));
> > + val&= ~BIT(0);
> > + __raw_writel(val, DA8XX_SYSCFG1_VIRT(DA8XX_PWRDN_REG));
> > +
> > + /* Get the multiplier needed for 1.5GHz PLL output */
> > + for (i = 0; i< ARRAY_SIZE(da850_sata_xtal); i++) {
> > + if (da850_sata_xtal[i] == da850_sata_refclkpn)
> > + break;
> > + }
>
> {} not needed.
Okay, will remove.
>
> > +
> > + if (i == ARRAY_SIZE(da850_sata_xtal)) {
> > + ret = -EINVAL;
> > + goto err1;
> > + } else {
>
> *else* not needed here, after *goto*.
Yup, will fix.
>
> > + val = SATA_PHY_MPY(i + 1);
> > + }
> > +
> [...]
>
> > diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h
> > b/arch/arm/mach-davinci/include/mach/da8xx.h
> > index e4fc1af..aa6f08e 100644
> > --- a/arch/arm/mach-davinci/include/mach/da8xx.h
> > +++ b/arch/arm/mach-davinci/include/mach/da8xx.h
> [...]
> > @@ -65,6 +66,7 @@ extern unsigned int da850_max_speed;
> > #define DA8XX_GPIO_BASE 0x01e26000
> > #define DA8XX_PSC1_BASE 0x01e27000
> > #define DA8XX_LCD_CNTRL_BASE 0x01e13000
> > +#define DA850_SATA_BASE 0x01e18000
>
> It's used only in devices-da8xx.c -- shouldn't it be declared there?
Yes, will move. Base addresses for modules like LCD and MMCSD can be
moved as well - should be subject of some future clean-up patch.
Thanks,
Sekhar
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