clk: meson: axg-ao: add 32k generation subtree

Add the clock subtree generating the 32k clock in amlogic axg ao block.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181221160239.26265-6-jbrunet@baylibre.com

drivers/clk/meson/axg-aoclk.c

@@ -12,10 +12,23 @@
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
 #include <linux/mfd/syscon.h>
-#include "clk-regmap.h"
+#include "clkc.h"
 #include "meson-aoclk.h"
 #include "axg-aoclk.h"
 
+/*
+ * AO Configuration Clock registers offsets
+ * Register offsets from the data sheet must be multiplied by 4.
+ */
+#define AO_RTI_PWR_CNTL_REG1	0x0C
+#define AO_RTI_PWR_CNTL_REG0	0x10
+#define AO_RTI_GEN_CNTL_REG0	0x40
+#define AO_OSCIN_CNTL		0x58
+#define AO_CRT_CLK_CNTL1	0x68
+#define AO_SAR_CLK		0x90
+#define AO_RTC_ALT_CLK_CNTL0	0x94
+#define AO_RTC_ALT_CLK_CNTL1	0x98
+
 #define AXG_AO_GATE(_name, _bit)					\
 static struct clk_regmap axg_aoclk_##_name = {				\
 	.data = &(struct clk_regmap_gate_data) {			\
@@ -39,17 +52,141 @@ AXG_AO_GATE(uart2, 5);
 AXG_AO_GATE(ir_blaster, 6);
 AXG_AO_GATE(saradc, 7);
 
+static struct clk_regmap axg_aoclk_cts_oscin = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.bit_idx = 14,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_oscin",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_names = (const char *[]){ "xtal" },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap axg_aoclk_32k_pre = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k_pre",
+		.ops = &clk_regmap_gate_ops,
+		.parent_names = (const char *[]){ "cts_oscin" },
+		.num_parents = 1,
+	},
+};
+
+static const struct meson_clk_dualdiv_param axg_32k_div_table[] = {
+	{
+		.dual	= 1,
+		.n1	= 733,
+		.m1	= 8,
+		.n2	= 732,
+		.m2	= 11,
+	}, {}
+};
+
+static struct clk_regmap axg_aoclk_32k_div = {
+	.data = &(struct meson_clk_dualdiv_data){
+		.n1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.n2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.m1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.m2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.dual = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.table = axg_32k_div_table,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k_div",
+		.ops = &meson_clk_dualdiv_ops,
+		.parent_names = (const char *[]){ "axg_ao_32k_pre" },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap axg_aoclk_32k_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTC_ALT_CLK_CNTL1,
+		.mask = 0x1,
+		.shift = 24,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_names = (const char *[]){ "axg_ao_32k_div",
+						  "axg_ao_32k_pre" },
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_aoclk_32k = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 30,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k",
+		.ops = &clk_regmap_gate_ops,
+		.parent_names = (const char *[]){ "axg_ao_32k_sel" },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_aoclk_cts_rtc_oscin = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x1,
+		.shift = 10,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_cts_rtc_oscin",
+		.ops = &clk_regmap_mux_ops,
+		.parent_names = (const char *[]){ "axg_ao_32k",
+						  "axg_ext_32k" },
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
 static struct clk_regmap axg_aoclk_clk81 = {
 	.data = &(struct clk_regmap_mux_data) {
 		.offset = AO_RTI_PWR_CNTL_REG0,
 		.mask = 0x1,
 		.shift = 8,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "axg_ao_clk81",
 		.ops = &clk_regmap_mux_ro_ops,
-		.parent_names = (const char *[]){ "clk81", "ao_alt_xtal"},
+		.parent_names = (const char *[]){ "clk81",
+						  "axg_ao_cts_rtc_oscin"},
 		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
@@ -106,17 +243,23 @@ static const unsigned int axg_aoclk_reset[] = {
 };
 
 static struct clk_regmap *axg_aoclk_regmap[] = {
-	[CLKID_AO_REMOTE]	= &axg_aoclk_remote,
-	[CLKID_AO_I2C_MASTER]	= &axg_aoclk_i2c_master,
-	[CLKID_AO_I2C_SLAVE]	= &axg_aoclk_i2c_slave,
-	[CLKID_AO_UART1]	= &axg_aoclk_uart1,
-	[CLKID_AO_UART2]	= &axg_aoclk_uart2,
-	[CLKID_AO_IR_BLASTER]	= &axg_aoclk_ir_blaster,
-	[CLKID_AO_SAR_ADC]	= &axg_aoclk_saradc,
-	[CLKID_AO_CLK81]	= &axg_aoclk_clk81,
-	[CLKID_AO_SAR_ADC_SEL]	= &axg_aoclk_saradc_mux,
-	[CLKID_AO_SAR_ADC_DIV]	= &axg_aoclk_saradc_div,
-	[CLKID_AO_SAR_ADC_CLK]	= &axg_aoclk_saradc_gate,
+	&axg_aoclk_remote,
+	&axg_aoclk_i2c_master,
+	&axg_aoclk_i2c_slave,
+	&axg_aoclk_uart1,
+	&axg_aoclk_uart2,
+	&axg_aoclk_ir_blaster,
+	&axg_aoclk_saradc,
+	&axg_aoclk_cts_oscin,
+	&axg_aoclk_32k_pre,
+	&axg_aoclk_32k_div,
+	&axg_aoclk_32k_sel,
+	&axg_aoclk_32k,
+	&axg_aoclk_cts_rtc_oscin,
+	&axg_aoclk_clk81,
+	&axg_aoclk_saradc_mux,
+	&axg_aoclk_saradc_div,
+	&axg_aoclk_saradc_gate,
 };
 
 static const struct clk_hw_onecell_data axg_aoclk_onecell_data = {
@@ -132,6 +275,12 @@ static const struct clk_hw_onecell_data axg_aoclk_onecell_data = {
 		[CLKID_AO_SAR_ADC_SEL]	= &axg_aoclk_saradc_mux.hw,
 		[CLKID_AO_SAR_ADC_DIV]	= &axg_aoclk_saradc_div.hw,
 		[CLKID_AO_SAR_ADC_CLK]	= &axg_aoclk_saradc_gate.hw,
+		[CLKID_AO_CTS_OSCIN]	= &axg_aoclk_cts_oscin.hw,
+		[CLKID_AO_32K_PRE]	= &axg_aoclk_32k_pre.hw,
+		[CLKID_AO_32K_DIV]	= &axg_aoclk_32k_div.hw,
+		[CLKID_AO_32K_SEL]	= &axg_aoclk_32k_sel.hw,
+		[CLKID_AO_32K]		= &axg_aoclk_32k.hw,
+		[CLKID_AO_CTS_RTC_OSCIN] = &axg_aoclk_cts_rtc_oscin.hw,
 	},
 	.num = NR_CLKS,
 };

drivers/clk/meson/axg-aoclk.h

@@ -10,18 +10,7 @@
 #ifndef __AXG_AOCLKC_H
 #define __AXG_AOCLKC_H
 
-#define NR_CLKS	11
-/* AO Configuration Clock registers offsets
- * Register offsets from the data sheet must be multiplied by 4.
- */
-#define AO_RTI_PWR_CNTL_REG1	0x0C
-#define AO_RTI_PWR_CNTL_REG0	0x10
-#define AO_RTI_GEN_CNTL_REG0	0x40
-#define AO_OSCIN_CNTL		0x58
-#define AO_CRT_CLK_CNTL1	0x68
-#define AO_SAR_CLK		0x90
-#define AO_RTC_ALT_CLK_CNTL0	0x94
-#define AO_RTC_ALT_CLK_CNTL1	0x98
+#define NR_CLKS	17
 
 #include <dt-bindings/clock/axg-aoclkc.h>
 #include <dt-bindings/reset/axg-aoclkc.h>