clk: meson: a1: add Amlogic A1 Peripherals clock controller driver

Introduce Peripherals clock controller for Amlogic A1 SoC family.

A1 SoC has four clock controllers on the board: PLL, Peripherals, CPU,
and Audio.
This patchset adds support for Amlogic A1 Peripherals clock driver and
allows to generate clocks for all A1 SoC peripheral IPs.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20230523135351.19133-7-ddrokosov@sberdevices.ru
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

drivers/clk/meson/Kconfig

@@ -109,6 +109,16 @@ config COMMON_CLK_A1_PLL
 	  device, A1 SoC Family. Say Y if you want A1 PLL clock controller
 	  to work.
 
+config COMMON_CLK_A1_PERIPHERALS
+	tristate "Amlogic A1 SoC Peripherals clock controller support"
+	depends on ARM64
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_REGMAP
+	help
+	  Support for the Peripherals clock controller on Amlogic A113L based
+	  device, A1 SoC Family. Say Y if you want A1 Peripherals clock
+	  controller to work.
+
 config COMMON_CLK_G12A
 	tristate "G12 and SM1 SoC clock controllers support"
 	depends on ARM64

drivers/clk/meson/Makefile

@@ -17,6 +17,7 @@ obj-$(CONFIG_COMMON_CLK_MESON_VID_PLL_DIV) += vid-pll-div.o
 obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o
 obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o
 obj-$(CONFIG_COMMON_CLK_A1_PLL) += a1-pll.o
+obj-$(CONFIG_COMMON_CLK_A1_PERIPHERALS) += a1-peripherals.o
 obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o
 obj-$(CONFIG_COMMON_CLK_G12A) += g12a.o g12a-aoclk.o
 obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o meson8-ddr.o

drivers/clk/meson/a1-peripherals.h

@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Amlogic A1 Peripherals Clock Controller internals
+ *
+ * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
+ * Author: Jian Hu <jian.hu@amlogic.com>
+ *
+ * Copyright (c) 2023, SberDevices. All Rights Reserved.
+ * Author: Dmitry Rokosov <ddrokosov@sberdevices.ru>
+ */
+
+#ifndef __A1_PERIPHERALS_H
+#define __A1_PERIPHERALS_H
+
+/* peripherals clock controller register offset */
+#define SYS_OSCIN_CTRL		0x0
+#define RTC_BY_OSCIN_CTRL0	0x4
+#define RTC_BY_OSCIN_CTRL1	0x8
+#define RTC_CTRL		0xc
+#define SYS_CLK_CTRL0		0x10
+#define SYS_CLK_EN0		0x1c
+#define SYS_CLK_EN1		0x20
+#define AXI_CLK_EN		0x24
+#define DSPA_CLK_EN		0x28
+#define DSPB_CLK_EN		0x2c
+#define DSPA_CLK_CTRL0		0x30
+#define DSPB_CLK_CTRL0		0x34
+#define CLK12_24_CTRL		0x38
+#define GEN_CLK_CTRL		0x3c
+#define SAR_ADC_CLK_CTRL	0xc0
+#define PWM_CLK_AB_CTRL		0xc4
+#define PWM_CLK_CD_CTRL		0xc8
+#define PWM_CLK_EF_CTRL		0xcc
+#define SPICC_CLK_CTRL		0xd0
+#define TS_CLK_CTRL		0xd4
+#define SPIFC_CLK_CTRL		0xd8
+#define USB_BUSCLK_CTRL		0xdc
+#define SD_EMMC_CLK_CTRL	0xe0
+#define CECA_CLK_CTRL0		0xe4
+#define CECA_CLK_CTRL1		0xe8
+#define CECB_CLK_CTRL0		0xec
+#define CECB_CLK_CTRL1		0xf0
+#define PSRAM_CLK_CTRL		0xf4
+#define DMC_CLK_CTRL		0xf8
+
+/* include the CLKIDs that have been made part of the DT binding */
+#include <dt-bindings/clock/amlogic,a1-peripherals-clkc.h>
+
+/*
+ * CLKID index values for internal clocks
+ *
+ * These indices are entirely contrived and do not map onto the hardware.
+ * It has now been decided to expose everything by default in the DT header:
+ * include/dt-bindings/clock/a1-peripherals-clkc.h.
+ * Only the clocks ids we don't want to expose, such as the internal muxes and
+ * dividers of composite clocks, will remain defined here.
+ */
+#define CLKID_XTAL_IN		0
+#define CLKID_DSPA_SEL		61
+#define CLKID_DSPB_SEL		62
+#define CLKID_SARADC_SEL	74
+#define CLKID_SYS_A_SEL		89
+#define CLKID_SYS_A_DIV		90
+#define CLKID_SYS_A		91
+#define CLKID_SYS_B_SEL		92
+#define CLKID_SYS_B_DIV		93
+#define CLKID_SYS_B		94
+#define CLKID_DSPA_A_DIV	96
+#define CLKID_DSPA_A		97
+#define CLKID_DSPA_B_DIV	99
+#define CLKID_DSPA_B		100
+#define CLKID_DSPB_A_DIV	102
+#define CLKID_DSPB_A		103
+#define CLKID_DSPB_B_DIV	105
+#define CLKID_DSPB_B		106
+#define CLKID_RTC_32K_IN	107
+#define CLKID_RTC_32K_DIV	108
+#define CLKID_RTC_32K_XTAL	109
+#define CLKID_RTC_32K_SEL	110
+#define CLKID_CECB_32K_IN	111
+#define CLKID_CECB_32K_DIV	112
+#define CLKID_CECA_32K_IN	115
+#define CLKID_CECA_32K_DIV	116
+#define CLKID_DIV2_PRE		119
+#define CLKID_24M_DIV2		120
+#define CLKID_GEN_DIV		122
+#define CLKID_SARADC_DIV	123
+#define CLKID_PWM_A_DIV		125
+#define CLKID_PWM_B_DIV		127
+#define CLKID_PWM_C_DIV		129
+#define CLKID_PWM_D_DIV		131
+#define CLKID_PWM_E_DIV		133
+#define CLKID_PWM_F_DIV		135
+#define CLKID_SPICC_SEL		136
+#define CLKID_SPICC_DIV		137
+#define CLKID_SPICC_SEL2	138
+#define CLKID_TS_DIV		139
+#define CLKID_SPIFC_SEL		140
+#define CLKID_SPIFC_DIV		141
+#define CLKID_SPIFC_SEL2	142
+#define CLKID_USB_BUS_SEL	143
+#define CLKID_USB_BUS_DIV	144
+#define CLKID_SD_EMMC_SEL	145
+#define CLKID_SD_EMMC_DIV	146
+#define CLKID_PSRAM_SEL		148
+#define CLKID_PSRAM_DIV		149
+#define CLKID_PSRAM_SEL2	150
+#define CLKID_DMC_SEL		151
+#define CLKID_DMC_DIV		152
+#define CLKID_DMC_SEL2		153
+#define NR_CLKS			154
+
+#endif /* __A1_PERIPHERALS_H */