On Mon, Aug 04, 2014 at 07:11:14PM +0800, Shengjiu Wang wrote: > We actually have lvds2 (analog clock2), an I/O clock like lvds1, in the SoC. > And this lvds2, along with lvds1, can be used to provide external clock source > to the internal pll, such as pll4_audio and pll5_video. > > So This patch mainly adds the lvds2 to the clock tree and fix its relationship > with pll4 accordingly.
The patch subject and commit log are slightly different from what code does. The code adds both lvds/anaclk clocks as input to SoC. > > [ To reduce the risk from code changing. This patch only takes care of pll4 > related part. We might later need to add the relationship with pll5 too. ] I prefer to handles pll5 in the same patch, as they are logically the same thing. Shawn > > Signed-off-by: Nicolin Chen <[email protected]> > Signed-off-by: Shengjiu Wang <[email protected]> > --- > arch/arm/mach-imx/clk-imx6q.c | 9 ++++++++- > include/dt-bindings/clock/imx6qdl-clock.h | 7 ++++++- > 2 files changed, 14 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c > index 1d6dd59..927a062 100644 > --- a/arch/arm/mach-imx/clk-imx6q.c > +++ b/arch/arm/mach-imx/clk-imx6q.c > @@ -73,6 +73,7 @@ static const char *lvds_sels[] = { > "pll4_audio", "pll5_video", "pll8_mlb", "enet_ref", > "pcie_ref_125m", "sata_ref_100m", > }; > +static const char *pll_av_sels[] = { "osc", "lvds1_in", "lvds2_in", "dummy", > }; > > static struct clk *clk[IMX6QDL_CLK_END]; > static struct clk_onecell_data clk_data; > @@ -119,6 +120,9 @@ static void __init imx6q_clocks_init(struct device_node > *ccm_node) > clk[IMX6QDL_CLK_CKIL] = imx_obtain_fixed_clock("ckil", 0); > clk[IMX6QDL_CLK_CKIH] = imx_obtain_fixed_clock("ckih1", 0); > clk[IMX6QDL_CLK_OSC] = imx_obtain_fixed_clock("osc", 0); > + /* Clock source from external clock via ANACLK1/2 PADs */ > + clk[IMX6QDL_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0); > + clk[IMX6QDL_CLK_ANACLK2] = imx_obtain_fixed_clock("anaclk2", 0); > > np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop"); > base = of_iomap(np, 0); > @@ -136,7 +140,7 @@ static void __init imx6q_clocks_init(struct device_node > *ccm_node) > clk[IMX6QDL_CLK_PLL1_SYS] = imx_clk_pllv3(IMX_PLLV3_SYS, > "pll1_sys", "osc", base, 0x7f); > clk[IMX6QDL_CLK_PLL2_BUS] = imx_clk_pllv3(IMX_PLLV3_GENERIC, > "pll2_bus", "osc", base + 0x30, 0x1); > clk[IMX6QDL_CLK_PLL3_USB_OTG] = imx_clk_pllv3(IMX_PLLV3_USB, > "pll3_usb_otg", "osc", base + 0x10, 0x3); > - clk[IMX6QDL_CLK_PLL4_AUDIO] = imx_clk_pllv3(IMX_PLLV3_AV, > "pll4_audio", "osc", base + 0x70, 0x7f); > + clk[IMX6QDL_CLK_PLL4_AUDIO] = imx_clk_pllv3(IMX_PLLV3_AV, > "pll4_audio", "pll4_sel", base + 0x70, 0x7f); > clk[IMX6QDL_CLK_PLL5_VIDEO] = imx_clk_pllv3(IMX_PLLV3_AV, > "pll5_video", "osc", base + 0xa0, 0x7f); > clk[IMX6QDL_CLK_PLL6_ENET] = imx_clk_pllv3(IMX_PLLV3_ENET, > "pll6_enet", "osc", base + 0xe0, 0x3); > clk[IMX6QDL_CLK_PLL7_USB_HOST] = imx_clk_pllv3(IMX_PLLV3_USB, > "pll7_usb_host","osc", base + 0x20, 0x3); > @@ -169,6 +173,7 @@ static void __init imx6q_clocks_init(struct device_node > *ccm_node) > > clk[IMX6QDL_CLK_LVDS1_SEL] = imx_clk_mux("lvds1_sel", base + 0x160, 0, > 5, lvds_sels, ARRAY_SIZE(lvds_sels)); > clk[IMX6QDL_CLK_LVDS2_SEL] = imx_clk_mux("lvds2_sel", base + 0x160, 5, > 5, lvds_sels, ARRAY_SIZE(lvds_sels)); > + clk[IMX6QDL_CLK_PLL4_SEL] = imx_clk_mux("pll4_sel", base + 0x70, 14, > 2, pll_av_sels, ARRAY_SIZE(pll_av_sels)); > > /* > * lvds1_gate and lvds2_gate are pseudo-gates. Both can be > @@ -178,6 +183,8 @@ static void __init imx6q_clocks_init(struct device_node > *ccm_node) > */ > clk[IMX6QDL_CLK_LVDS1_GATE] = imx_clk_gate("lvds1_gate", "lvds1_sel", > base + 0x160, 10); > clk[IMX6QDL_CLK_LVDS2_GATE] = imx_clk_gate("lvds2_gate", "lvds2_sel", > base + 0x160, 11); > + clk[IMX6QDL_CLK_LVDS1_IN] = imx_clk_gate("lvds1_in", "anaclk1", base + > 0x160, 12); > + clk[IMX6QDL_CLK_LVDS2_IN] = imx_clk_gate("lvds2_in", "anaclk2", base + > 0x160, 13); > > /* name > parent_name reg idx */ > clk[IMX6QDL_CLK_PLL2_PFD0_352M] = imx_clk_pfd("pll2_pfd0_352m", > "pll2_bus", base + 0x100, 0); > diff --git a/include/dt-bindings/clock/imx6qdl-clock.h > b/include/dt-bindings/clock/imx6qdl-clock.h > index 323e865..9530de8 100644 > --- a/include/dt-bindings/clock/imx6qdl-clock.h > +++ b/include/dt-bindings/clock/imx6qdl-clock.h > @@ -220,6 +220,11 @@ > #define IMX6QDL_CLK_LVDS2_GATE 207 > #define IMX6QDL_CLK_ESAI_IPG 208 > #define IMX6QDL_CLK_ESAI_MEM 209 > -#define IMX6QDL_CLK_END 210 > +#define IMX6QDL_CLK_LVDS1_IN 210 > +#define IMX6QDL_CLK_LVDS2_IN 211 > +#define IMX6QDL_CLK_ANACLK1 212 > +#define IMX6QDL_CLK_ANACLK2 213 > +#define IMX6QDL_CLK_PLL4_SEL 214 > +#define IMX6QDL_CLK_END 215 > > #endif /* __DT_BINDINGS_CLOCK_IMX6QDL_H */ > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
