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 */