On Wed, Jun 18, 2014 at 7:23 AM, Mikko Perttunen <mperttunen@xxxxxxxxxx> wrote: > This makes the SATA PLL be controlled by hardware instead of software. > This is required for working SATA support. > > Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx> > Acked-by: Stephen Warren <swarren@xxxxxxxxxx> I know Peter sent a pull request including this patch already, but I don't see it yet in Mike's tree, so perhaps it's possible to address my comment below (or else I'll include it in the next spin of my XUSB series. > diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c > @@ -1361,6 +1364,11 @@ static int clk_plle_tegra114_enable(struct clk_hw *hw) > val |= XUSBIO_PLL_CFG0_SEQ_ENABLE; > pll_writel(val, XUSBIO_PLL_CFG0, pll); > > + /* Enable hw control of SATA pll */ > + val = pll_readl(SATA_PLL_CFG0, pll); > + val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL; > + pll_writel(val, SATA_PLL_CFG0, pll); > + Apparently the procedure for enabling the SATA PLL for XUSB (when the SATA lane is used) is slightly different. Specifically, it would be: val = pll_readl(SATA_PLL_CFG0, pll); val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL; val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET; val |= SATA_PLL_CFG0_SEQ_START_STATE; pll_writel(val, SATA_PLL_CFG0, pll); udelay(1); val = pll_readl(SATA_PLL_CFG0, pll); val |= SATA_PLL_CFG0_SEQ_ENABLE; pll_writel(val, SATA_PLL_CFG0, pll); Do you know if this sequence also works when the SATA lane is used for SATA? -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
