ARM: imx6sl: add BYPASS support for PLL clocks

This is the same change for imx6sl clock driver as "ARM: imx6q: add BYPASS
support for PLL clocks" for imx6q.  The difference is that only anaclk1
is available on imx6sl.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

2 files changed, 87 insertions, 9 deletions

diff --git a/arch/arm/mach-imx/clk-imx6sl.c b/arch/arm/mach-imx/clk-imx6sl.c
index f4d732661d6d..6791ff3e8914 100644
--- a/arch/arm/mach-imx/clk-imx6sl.c
+++ b/arch/arm/mach-imx/clk-imx6sl.c
@@ -57,6 +57,20 @@ static const char *epdc_pix_sels[]	= { "pll2_bus", "pll3_usb_otg", "pll5_video_d
 static const char *audio_sels[]         = { "pll4_audio_div", "pll3_pfd2", "pll3_pfd3", "pll3_usb_otg", };
 static const char *ecspi_sels[]         = { "pll3_60m", "osc", };
 static const char *uart_sels[]          = { "pll3_80m", "osc", };
+static const char *lvds_sels[]          = {
+        "pll1_sys", "pll2_bus", "pll2_pfd0", "pll2_pfd1", "pll2_pfd2", "dummy", "pll4_audio", "pll5_video",
+        "dummy", "enet_ref", "dummy", "dummy", "pll3_usb_otg", "pll7_usb_host", "pll3_pfd0", "pll3_pfd1",
+        "pll3_pfd2", "pll3_pfd3", "osc", "dummy", "dummy", "dummy", "dummy", "dummy",
+         "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
+};
+static const char *pll_bypass_src_sels[] = { "osc", "lvds1_in", };
+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", };
+static const char *pll4_bypass_sels[]   = { "pll4", "pll4_bypass_src", };
+static const char *pll5_bypass_sels[]   = { "pll5", "pll5_bypass_src", };
+static const char *pll6_bypass_sels[]   = { "pll6", "pll6_bypass_src", };
+static const char *pll7_bypass_sels[]   = { "pll7", "pll7_bypass_src", };
 
 static struct clk_div_table clk_enet_ref_table[] = {
         { .val = 0, .div = 20, },
@@ -177,20 +191,59 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node)
         clks[IMX6SL_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
         clks[IMX6SL_CLK_CKIL] = imx_obtain_fixed_clock("ckil", 0);
         clks[IMX6SL_CLK_OSC] = imx_obtain_fixed_clock("osc", 0);
+        /* Clock source from external clock via CLK1 PAD */
+        clks[IMX6SL_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0);
 
         np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-anatop");
         base = of_iomap(np, 0);
         WARN_ON(!base);
         anatop_base = base;
 
-        /*                                             type               name            parent  base         div_mask */
-        clks[IMX6SL_CLK_PLL1_SYS]      = imx_clk_pllv3(IMX_PLLV3_SYS,     "pll1_sys",      "osc", base,        0x7f);
-        clks[IMX6SL_CLK_PLL2_BUS]      = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_bus",      "osc", base + 0x30, 0x1);
-        clks[IMX6SL_CLK_PLL3_USB_OTG]  = imx_clk_pllv3(IMX_PLLV3_USB,     "pll3_usb_otg",  "osc", base + 0x10, 0x3);
-        clks[IMX6SL_CLK_PLL4_AUDIO]    = imx_clk_pllv3(IMX_PLLV3_AV,      "pll4_audio",    "osc", base + 0x70, 0x7f);
-        clks[IMX6SL_CLK_PLL5_VIDEO]    = imx_clk_pllv3(IMX_PLLV3_AV,      "pll5_video",    "osc", base + 0xa0, 0x7f);
-        clks[IMX6SL_CLK_PLL6_ENET]     = imx_clk_pllv3(IMX_PLLV3_ENET,    "pll6_enet",     "osc", base + 0xe0, 0x3);
-        clks[IMX6SL_CLK_PLL7_USB_HOST] = imx_clk_pllv3(IMX_PLLV3_USB,     "pll7_usb_host", "osc", base + 0x20, 0x3);
+        clks[IMX6SL_PLL1_BYPASS_SRC] = imx_clk_mux("pll1_bypass_src", base + 0x00, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+        clks[IMX6SL_PLL2_BYPASS_SRC] = imx_clk_mux("pll2_bypass_src", base + 0x30, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+        clks[IMX6SL_PLL3_BYPASS_SRC] = imx_clk_mux("pll3_bypass_src", base + 0x10, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+        clks[IMX6SL_PLL4_BYPASS_SRC] = imx_clk_mux("pll4_bypass_src", base + 0x70, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+        clks[IMX6SL_PLL5_BYPASS_SRC] = imx_clk_mux("pll5_bypass_src", base + 0xa0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+        clks[IMX6SL_PLL6_BYPASS_SRC] = imx_clk_mux("pll6_bypass_src", base + 0xe0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+        clks[IMX6SL_PLL7_BYPASS_SRC] = imx_clk_mux("pll7_bypass_src", base + 0x20, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
+
+        /*                                    type               name    parent_name        base         div_mask */
+        clks[IMX6SL_CLK_PLL1] = imx_clk_pllv3(IMX_PLLV3_SYS,     "pll1", "pll1_bypass_src", base + 0x00, 0x7f);
+        clks[IMX6SL_CLK_PLL2] = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2", "pll2_bypass_src", base + 0x30, 0x1);
+        clks[IMX6SL_CLK_PLL3] = imx_clk_pllv3(IMX_PLLV3_USB,     "pll3", "pll3_bypass_src", base + 0x10, 0x3);
+        clks[IMX6SL_CLK_PLL4] = imx_clk_pllv3(IMX_PLLV3_AV,      "pll4", "pll4_bypass_src", base + 0x70, 0x7f);
+        clks[IMX6SL_CLK_PLL5] = imx_clk_pllv3(IMX_PLLV3_AV,      "pll5", "pll5_bypass_src", base + 0xa0, 0x7f);
+        clks[IMX6SL_CLK_PLL6] = imx_clk_pllv3(IMX_PLLV3_ENET,    "pll6", "pll6_bypass_src", base + 0xe0, 0x3);
+        clks[IMX6SL_CLK_PLL7] = imx_clk_pllv3(IMX_PLLV3_USB,     "pll7", "pll7_bypass_src", base + 0x20, 0x3);
+
+        clks[IMX6SL_PLL1_BYPASS] = imx_clk_mux_flags("pll1_bypass", base + 0x00, 16, 1, pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT);
+        clks[IMX6SL_PLL2_BYPASS] = imx_clk_mux_flags("pll2_bypass", base + 0x30, 16, 1, pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT);
+        clks[IMX6SL_PLL3_BYPASS] = imx_clk_mux_flags("pll3_bypass", base + 0x10, 16, 1, pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT);
+        clks[IMX6SL_PLL4_BYPASS] = imx_clk_mux_flags("pll4_bypass", base + 0x70, 16, 1, pll4_bypass_sels, ARRAY_SIZE(pll4_bypass_sels), CLK_SET_RATE_PARENT);
+        clks[IMX6SL_PLL5_BYPASS] = imx_clk_mux_flags("pll5_bypass", base + 0xa0, 16, 1, pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT);
+        clks[IMX6SL_PLL6_BYPASS] = imx_clk_mux_flags("pll6_bypass", base + 0xe0, 16, 1, pll6_bypass_sels, ARRAY_SIZE(pll6_bypass_sels), CLK_SET_RATE_PARENT);
+        clks[IMX6SL_PLL7_BYPASS] = imx_clk_mux_flags("pll7_bypass", base + 0x20, 16, 1, pll7_bypass_sels, ARRAY_SIZE(pll7_bypass_sels), CLK_SET_RATE_PARENT);
+
+        /* Do not bypass PLLs initially */
+        clk_set_parent(clks[IMX6SL_PLL1_BYPASS], clks[IMX6SL_CLK_PLL1]);
+        clk_set_parent(clks[IMX6SL_PLL2_BYPASS], clks[IMX6SL_CLK_PLL2]);
+        clk_set_parent(clks[IMX6SL_PLL3_BYPASS], clks[IMX6SL_CLK_PLL3]);
+        clk_set_parent(clks[IMX6SL_PLL4_BYPASS], clks[IMX6SL_CLK_PLL4]);
+        clk_set_parent(clks[IMX6SL_PLL5_BYPASS], clks[IMX6SL_CLK_PLL5]);
+        clk_set_parent(clks[IMX6SL_PLL6_BYPASS], clks[IMX6SL_CLK_PLL6]);
+        clk_set_parent(clks[IMX6SL_PLL7_BYPASS], clks[IMX6SL_CLK_PLL7]);
+
+        clks[IMX6SL_CLK_PLL1_SYS]      = imx_clk_gate("pll1_sys",      "pll1_bypass", base + 0x00, 13);
+        clks[IMX6SL_CLK_PLL2_BUS]      = imx_clk_gate("pll2_bus",      "pll2_bypass", base + 0x30, 13);
+        clks[IMX6SL_CLK_PLL3_USB_OTG]  = imx_clk_gate("pll3_usb_otg",  "pll3_bypass", base + 0x10, 13);
+        clks[IMX6SL_CLK_PLL4_AUDIO]    = imx_clk_gate("pll4_audio",    "pll4_bypass", base + 0x70, 13);
+        clks[IMX6SL_CLK_PLL5_VIDEO]    = imx_clk_gate("pll5_video",    "pll5_bypass", base + 0xa0, 13);
+        clks[IMX6SL_CLK_PLL6_ENET]     = imx_clk_gate("pll6_enet",     "pll6_bypass", base + 0xe0, 13);
+        clks[IMX6SL_CLK_PLL7_USB_HOST] = imx_clk_gate("pll7_usb_host", "pll7_bypass", base + 0xe0, 13);
+
+        clks[IMX6SL_CLK_LVDS1_SEL] = imx_clk_mux("lvds1_sel", base + 0x160, 0, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
+        clks[IMX6SL_CLK_LVDS1_OUT] = imx_clk_gate_exclusive("lvds1_out", "lvds1_sel", base + 0x160, 10, BIT(12));
+        clks[IMX6SL_CLK_LVDS1_IN] = imx_clk_gate_exclusive("lvds1_in", "anaclk1", base + 0x160, 12, BIT(10));
 
         /*
          * usbphy1 and usbphy2 are implemented as dummy gates using reserve
diff --git a/include/dt-bindings/clock/imx6sl-clock.h b/include/dt-bindings/clock/imx6sl-clock.h
index b91dd462ba85..f10a928fe2dd 100644
--- a/include/dt-bindings/clock/imx6sl-clock.h
+++ b/include/dt-bindings/clock/imx6sl-clock.h
@@ -146,6 +146,31 @@
 #define IMX6SL_CLK_PLL4_AUDIO_DIV       133
 #define IMX6SL_CLK_SPBA                 134
 #define IMX6SL_CLK_ENET                 135
-#define IMX6SL_CLK_END                  136
+#define IMX6SL_CLK_LVDS1_SEL            136
+#define IMX6SL_CLK_LVDS1_OUT            137
+#define IMX6SL_CLK_LVDS1_IN             138
+#define IMX6SL_CLK_ANACLK1              139
+#define IMX6SL_PLL1_BYPASS_SRC          140
+#define IMX6SL_PLL2_BYPASS_SRC          141
+#define IMX6SL_PLL3_BYPASS_SRC          142
+#define IMX6SL_PLL4_BYPASS_SRC          143
+#define IMX6SL_PLL5_BYPASS_SRC          144
+#define IMX6SL_PLL6_BYPASS_SRC          145
+#define IMX6SL_PLL7_BYPASS_SRC          146
+#define IMX6SL_CLK_PLL1                 147
+#define IMX6SL_CLK_PLL2                 148
+#define IMX6SL_CLK_PLL3                 149
+#define IMX6SL_CLK_PLL4                 150
+#define IMX6SL_CLK_PLL5                 151
+#define IMX6SL_CLK_PLL6                 152
+#define IMX6SL_CLK_PLL7                 153
+#define IMX6SL_PLL1_BYPASS              154
+#define IMX6SL_PLL2_BYPASS              155
+#define IMX6SL_PLL3_BYPASS              156
+#define IMX6SL_PLL4_BYPASS              157
+#define IMX6SL_PLL5_BYPASS              158
+#define IMX6SL_PLL6_BYPASS              159
+#define IMX6SL_PLL7_BYPASS              160
+#define IMX6SL_CLK_END                  161
 
 #endif /* __DT_BINDINGS_CLOCK_IMX6SL_H */