clk: imx6sx: add missing lvds2 clock to the clock tree

i.MX6SX has lvds2 (analog clock2), an I/O clock like lvds1.
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.

This patch mainly adds the lvds2 to the clock tree and fix its
relationship with pll accordingly.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/imx/clk-imx6sx.c b/drivers/clk/imx/clk-imx6sx.c
index bc3f9ebf2d9e9124b64f0749fa1e32c81764a2a1..0178ee26a53abf49cc79f13049bdd3c1d19db7ab 100644 (file)
--- a/drivers/clk/imx/clk-imx6sx.c
+++ b/drivers/clk/imx/clk-imx6sx.c
@@ -80,7 +80,7 @@ static const char *lvds_sels[]        = {
        "arm", "pll1_sys", "dummy", "dummy", "dummy", "dummy", "dummy", "pll5_video_div",
        "dummy", "dummy", "pcie_ref_125m", "dummy", "usbphy1", "usbphy2",
 };
-static const char *pll_bypass_src_sels[] = { "osc", "lvds1_in", };
+static const char *pll_bypass_src_sels[] = { "osc", "lvds1_in", "lvds2_in", "dummy", };
 static const char *pll1_bypass_sels[] = { "pll1", "pll1_bypass_src", };
 static const char *pll2_bypass_sels[] = { "pll2", "pll2_bypass_src", };
 static const char *pll3_bypass_sels[] = { "pll3", "pll3_bypass_src", };
@@ -158,8 +158,9 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
        clks[IMX6SX_CLK_IPP_DI0] = of_clk_get_by_name(ccm_node, "ipp_di0");
        clks[IMX6SX_CLK_IPP_DI1] = of_clk_get_by_name(ccm_node, "ipp_di1");
 
-       /* Clock source from external clock via CLK1 PAD */
-       clks[IMX6SX_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0);
+       /* Clock source from external clock via CLK1/2 PAD */
+       clks[IMX6SX_CLK_ANACLK1] = of_clk_get_by_name(ccm_node, "anaclk1");
+       clks[IMX6SX_CLK_ANACLK2] = of_clk_get_by_name(ccm_node, "anaclk2");
 
        np = of_find_compatible_node(NULL, NULL, "fsl,imx6sx-anatop");
        base = of_iomap(np, 0);
@@ -228,7 +229,9 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
        clks[IMX6SX_CLK_PCIE_REF_125M] = imx_clk_gate("pcie_ref_125m", "pcie_ref", base + 0xe0, 19);
 
        clks[IMX6SX_CLK_LVDS1_OUT] = imx_clk_gate_exclusive("lvds1_out", "lvds1_sel", base + 0x160, 10, BIT(12));
+       clks[IMX6SX_CLK_LVDS2_OUT] = imx_clk_gate_exclusive("lvds2_out", "lvds2_sel", base + 0x160, 11, BIT(13));
        clks[IMX6SX_CLK_LVDS1_IN]  = imx_clk_gate_exclusive("lvds1_in",  "anaclk1",   base + 0x160, 12, BIT(10));
+       clks[IMX6SX_CLK_LVDS2_IN]  = imx_clk_gate_exclusive("lvds2_in",  "anaclk2",   base + 0x160, 13, BIT(11));
 
        clks[IMX6SX_CLK_ENET_REF] = clk_register_divider_table(NULL, "enet_ref", "pll6_enet", 0,
                        base + 0xe0, 0, 2, 0, clk_enet_ref_table,
@@ -270,6 +273,7 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
 
        /*                                                name                reg           shift   width   parent_names       num_parents */
        clks[IMX6SX_CLK_LVDS1_SEL]          = imx_clk_mux("lvds1_sel",        base + 0x160, 0,      5,      lvds_sels,         ARRAY_SIZE(lvds_sels));
+       clks[IMX6SX_CLK_LVDS2_SEL]          = imx_clk_mux("lvds2_sel",        base + 0x160, 5,      5,      lvds_sels,         ARRAY_SIZE(lvds_sels));
 
        np = ccm_node;
        base = of_iomap(np, 0);

diff --git a/include/dt-bindings/clock/imx6sx-clock.h b/include/dt-bindings/clock/imx6sx-clock.h
index 36f0324902a5b1d0451ec5a391df8ed8c7ef219f..cd2d6c570e866ad745a9bfa865aeb479162ebfd0 100644 (file)
--- a/include/dt-bindings/clock/imx6sx-clock.h
+++ b/include/dt-bindings/clock/imx6sx-clock.h
@@ -275,6 +275,10 @@
 #define IMX6SX_PLL6_BYPASS             262
 #define IMX6SX_PLL7_BYPASS             263
 #define IMX6SX_CLK_SPDIF_GCLK          264
-#define IMX6SX_CLK_CLK_END             265
+#define IMX6SX_CLK_LVDS2_SEL           265
+#define IMX6SX_CLK_LVDS2_OUT           266
+#define IMX6SX_CLK_LVDS2_IN            267
+#define IMX6SX_CLK_ANACLK2             268
+#define IMX6SX_CLK_CLK_END             269
 
 #endif /* __DT_BINDINGS_CLOCK_IMX6SX_H */