This is taken from Linux kernel 5.17, and contains just bare minimum functionality: CPU, UART and system timer.
Additional functionality (from newer kernel versions) will be added later. Note that the Linux side is under active development.
Signed-off-by: Ralph Siemsen ralph.siemsen@linaro.org --- The following changes were made, compared with Linux 5.17:
1) Add node for system controller registers. Declare it as syscon to provide a regmap interface.
2) In the clock controller node (renesas,r9a06g032-sysctrl), replace regs with regmap.
3) Add syscon-reset node, making use of the syscon regmap.
4) Add syscon phandle to ddrctrl. Used for checking h/w version.
5) Simplify the compatible string for all the UARTS, as per doc/device-tree-bindings/serial/snps-dw-apb-uart.txt
I could not find a way to avoid 1) and 2). Putting "syscon" in the compatible string for the clock controller leads to a catch-22, where the driver fails to initialize, and then boot hangs.
(no changes since v3)
Changes in v3: - add syscon phandle to ddrctl - simplify UART compatible strings
arch/arm/dts/r9a06g032.dtsi | 226 ++++++++++++++++++ include/dt-bindings/clock/r9a06g032-sysctrl.h | 148 ++++++++++++ 2 files changed, 374 insertions(+) create mode 100644 arch/arm/dts/r9a06g032.dtsi create mode 100644 include/dt-bindings/clock/r9a06g032-sysctrl.h
diff --git a/arch/arm/dts/r9a06g032.dtsi b/arch/arm/dts/r9a06g032.dtsi new file mode 100644 index 0000000000..e0ddffb074 --- /dev/null +++ b/arch/arm/dts/r9a06g032.dtsi @@ -0,0 +1,226 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Base Device Tree Source for the Renesas RZ/N1D (R9A06G032) + * + * Copyright (C) 2018 Renesas Electronics Europe Limited + * + */ + +#include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/clock/r9a06g032-sysctrl.h> + +/ { + compatible = "renesas,r9a06g032"; + #address-cells = <1>; + #size-cells = <1>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0>; + clocks = <&sysctrl R9A06G032_CLK_A7MP>; + }; + + cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <1>; + clocks = <&sysctrl R9A06G032_CLK_A7MP>; + enable-method = "renesas,r9a06g032-smp"; + cpu-release-addr = <0 0x4000c204>; + }; + }; + + ext_jtag_clk: extjtagclk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <0>; + }; + + ext_mclk: extmclk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <40000000>; + }; + + ext_rgmii_ref: extrgmiiref { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <0>; + }; + + ext_rtc_clk: extrtcclk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <0>; + }; + + soc { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + interrupt-parent = <&gic>; + ranges; + + plat_regs: system-controller@4000c000 { + compatible = "syscon"; + reg = <0x4000c000 0x1000>; + u-boot,dm-pre-reloc; + }; + + sysctrl: clock { + compatible = "renesas,r9a06g032-sysctrl"; + #clock-cells = <1>; + regmap = <&plat_regs>; + u-boot,dm-pre-reloc; + + clocks = <&ext_mclk>, <&ext_rtc_clk>, + <&ext_jtag_clk>, <&ext_rgmii_ref>; + clock-names = "mclk", "rtc", "jtag", "rgmii_ref_ext"; + }; + + ddrctrl: memory-controller@4000d000 { + compatible = "cadence,ddr-ctrl"; + reg = <0x4000d000 0x1000>, <0x4000e000 0x100>; + reg-names = "ddrc", "phy"; + interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&sysctrl R9A06G032_CLK_DDRC>, <&sysctrl R9A06G032_HCLK_DDRC>; + clock-names = "clk_ddrc", "hclk_ddrc"; + syscon = <&plat_regs>; + status = "disabled"; + }; + + uart0: serial@40060000 { + compatible = "snps,dw-apb-uart"; + reg = <0x40060000 0x400>; + interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART0>, <&sysctrl R9A06G032_HCLK_UART0>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart1: serial@40061000 { + compatible = "snps,dw-apb-uart"; + reg = <0x40061000 0x400>; + interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART1>, <&sysctrl R9A06G032_HCLK_UART1>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart2: serial@40062000 { + compatible = "snps,dw-apb-uart"; + reg = <0x40062000 0x400>; + interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART2>, <&sysctrl R9A06G032_HCLK_UART2>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart3: serial@50000000 { + compatible = "snps,dw-apb-uart"; + reg = <0x50000000 0x400>; + interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART3>, <&sysctrl R9A06G032_HCLK_UART3>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart4: serial@50001000 { + compatible = "snps,dw-apb-uart"; + reg = <0x50001000 0x400>; + interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART4>, <&sysctrl R9A06G032_HCLK_UART4>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart5: serial@50002000 { + compatible = "snps,dw-apb-uart"; + reg = <0x50002000 0x400>; + interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART5>, <&sysctrl R9A06G032_HCLK_UART5>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart6: serial@50003000 { + compatible = "snps,dw-apb-uart"; + reg = <0x50003000 0x400>; + interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART6>, <&sysctrl R9A06G032_HCLK_UART6>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + uart7: serial@50004000 { + compatible = "snps,dw-apb-uart"; + reg = <0x50004000 0x400>; + interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + reg-io-width = <4>; + clocks = <&sysctrl R9A06G032_CLK_UART7>, <&sysctrl R9A06G032_HCLK_UART7>; + clock-names = "baudclk", "apb_pclk"; + status = "disabled"; + }; + + pinctrl: pinctrl@40067000 { + compatible = "renesas,r9a06g032-pinctrl", "renesas,rzn1-pinctrl"; + reg = <0x40067000 0x1000>, <0x51000000 0x480>; + clocks = <&sysctrl R9A06G032_HCLK_PINCONFIG>; + clock-names = "bus"; + status = "disabled"; + }; + + gic: interrupt-controller@44101000 { + compatible = "arm,gic-400", "arm,cortex-a7-gic"; + interrupt-controller; + #interrupt-cells = <3>; + reg = <0x44101000 0x1000>, /* Distributer */ + <0x44102000 0x2000>, /* CPU interface */ + <0x44104000 0x2000>, /* Virt interface control */ + <0x44106000 0x2000>; /* Virt CPU interface */ + interrupts = + <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>; + }; + }; + + timer { + compatible = "arm,cortex-a7-timer", + "arm,armv7-timer"; + interrupt-parent = <&gic>; + arm,cpu-registers-not-fw-configured; + always-on; + interrupts = + <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>; + }; + + reboot { + compatible = "syscon-reboot"; + regmap = <&plat_regs>; + offset = <0x198>; /* sysctrl.RSTEN */ + mask = <0x40>; /* bit 6 = SWRST_REQ */ + value = <0x40>; + }; +}; diff --git a/include/dt-bindings/clock/r9a06g032-sysctrl.h b/include/dt-bindings/clock/r9a06g032-sysctrl.h new file mode 100644 index 0000000000..90c0f3dc1b --- /dev/null +++ b/include/dt-bindings/clock/r9a06g032-sysctrl.h @@ -0,0 +1,148 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * R9A06G032 sysctrl IDs + * + * Copyright (C) 2018 Renesas Electronics Europe Limited + * + * Michel Pollet michel.pollet@bp.renesas.com, buserror@gmail.com + */ + +#ifndef __DT_BINDINGS_R9A06G032_SYSCTRL_H__ +#define __DT_BINDINGS_R9A06G032_SYSCTRL_H__ + +#define R9A06G032_CLK_PLL_USB 1 +#define R9A06G032_CLK_48 1 /* AKA CLK_PLL_USB */ +#define R9A06G032_MSEBIS_CLK 3 /* AKA CLKOUT_D16 */ +#define R9A06G032_MSEBIM_CLK 3 /* AKA CLKOUT_D16 */ +#define R9A06G032_CLK_DDRPHY_PLLCLK 5 /* AKA CLKOUT_D1OR2 */ +#define R9A06G032_CLK50 6 /* AKA CLKOUT_D20 */ +#define R9A06G032_CLK25 7 /* AKA CLKOUT_D40 */ +#define R9A06G032_CLK125 9 /* AKA CLKOUT_D8 */ +#define R9A06G032_CLK_P5_PG1 17 /* AKA DIV_P5_PG */ +#define R9A06G032_CLK_REF_SYNC 21 /* AKA DIV_REF_SYNC */ +#define R9A06G032_CLK_25_PG4 26 +#define R9A06G032_CLK_25_PG5 27 +#define R9A06G032_CLK_25_PG6 28 +#define R9A06G032_CLK_25_PG7 29 +#define R9A06G032_CLK_25_PG8 30 +#define R9A06G032_CLK_ADC 31 +#define R9A06G032_CLK_ECAT100 32 +#define R9A06G032_CLK_HSR100 33 +#define R9A06G032_CLK_I2C0 34 +#define R9A06G032_CLK_I2C1 35 +#define R9A06G032_CLK_MII_REF 36 +#define R9A06G032_CLK_NAND 37 +#define R9A06G032_CLK_NOUSBP2_PG6 38 +#define R9A06G032_CLK_P1_PG2 39 +#define R9A06G032_CLK_P1_PG3 40 +#define R9A06G032_CLK_P1_PG4 41 +#define R9A06G032_CLK_P4_PG3 42 +#define R9A06G032_CLK_P4_PG4 43 +#define R9A06G032_CLK_P6_PG1 44 +#define R9A06G032_CLK_P6_PG2 45 +#define R9A06G032_CLK_P6_PG3 46 +#define R9A06G032_CLK_P6_PG4 47 +#define R9A06G032_CLK_PCI_USB 48 +#define R9A06G032_CLK_QSPI0 49 +#define R9A06G032_CLK_QSPI1 50 +#define R9A06G032_CLK_RGMII_REF 51 +#define R9A06G032_CLK_RMII_REF 52 +#define R9A06G032_CLK_SDIO0 53 +#define R9A06G032_CLK_SDIO1 54 +#define R9A06G032_CLK_SERCOS100 55 +#define R9A06G032_CLK_SLCD 56 +#define R9A06G032_CLK_SPI0 57 +#define R9A06G032_CLK_SPI1 58 +#define R9A06G032_CLK_SPI2 59 +#define R9A06G032_CLK_SPI3 60 +#define R9A06G032_CLK_SPI4 61 +#define R9A06G032_CLK_SPI5 62 +#define R9A06G032_CLK_SWITCH 63 +#define R9A06G032_HCLK_ECAT125 65 +#define R9A06G032_HCLK_PINCONFIG 66 +#define R9A06G032_HCLK_SERCOS 67 +#define R9A06G032_HCLK_SGPIO2 68 +#define R9A06G032_HCLK_SGPIO3 69 +#define R9A06G032_HCLK_SGPIO4 70 +#define R9A06G032_HCLK_TIMER0 71 +#define R9A06G032_HCLK_TIMER1 72 +#define R9A06G032_HCLK_USBF 73 +#define R9A06G032_HCLK_USBH 74 +#define R9A06G032_HCLK_USBPM 75 +#define R9A06G032_CLK_48_PG_F 76 +#define R9A06G032_CLK_48_PG4 77 +#define R9A06G032_CLK_DDRPHY_PCLK 81 /* AKA CLK_REF_SYNC_D4 */ +#define R9A06G032_CLK_FW 81 /* AKA CLK_REF_SYNC_D4 */ +#define R9A06G032_CLK_CRYPTO 81 /* AKA CLK_REF_SYNC_D4 */ +#define R9A06G032_CLK_A7MP 84 /* AKA DIV_CA7 */ +#define R9A06G032_HCLK_CAN0 85 +#define R9A06G032_HCLK_CAN1 86 +#define R9A06G032_HCLK_DELTASIGMA 87 +#define R9A06G032_HCLK_PWMPTO 88 +#define R9A06G032_HCLK_RSV 89 +#define R9A06G032_HCLK_SGPIO0 90 +#define R9A06G032_HCLK_SGPIO1 91 +#define R9A06G032_RTOS_MDC 92 +#define R9A06G032_CLK_CM3 93 +#define R9A06G032_CLK_DDRC 94 +#define R9A06G032_CLK_ECAT25 95 +#define R9A06G032_CLK_HSR50 96 +#define R9A06G032_CLK_HW_RTOS 97 +#define R9A06G032_CLK_SERCOS50 98 +#define R9A06G032_HCLK_ADC 99 +#define R9A06G032_HCLK_CM3 100 +#define R9A06G032_HCLK_CRYPTO_EIP150 101 +#define R9A06G032_HCLK_CRYPTO_EIP93 102 +#define R9A06G032_HCLK_DDRC 103 +#define R9A06G032_HCLK_DMA0 104 +#define R9A06G032_HCLK_DMA1 105 +#define R9A06G032_HCLK_GMAC0 106 +#define R9A06G032_HCLK_GMAC1 107 +#define R9A06G032_HCLK_GPIO0 108 +#define R9A06G032_HCLK_GPIO1 109 +#define R9A06G032_HCLK_GPIO2 110 +#define R9A06G032_HCLK_HSR 111 +#define R9A06G032_HCLK_I2C0 112 +#define R9A06G032_HCLK_I2C1 113 +#define R9A06G032_HCLK_LCD 114 +#define R9A06G032_HCLK_MSEBI_M 115 +#define R9A06G032_HCLK_MSEBI_S 116 +#define R9A06G032_HCLK_NAND 117 +#define R9A06G032_HCLK_PG_I 118 +#define R9A06G032_HCLK_PG19 119 +#define R9A06G032_HCLK_PG20 120 +#define R9A06G032_HCLK_PG3 121 +#define R9A06G032_HCLK_PG4 122 +#define R9A06G032_HCLK_QSPI0 123 +#define R9A06G032_HCLK_QSPI1 124 +#define R9A06G032_HCLK_ROM 125 +#define R9A06G032_HCLK_RTC 126 +#define R9A06G032_HCLK_SDIO0 127 +#define R9A06G032_HCLK_SDIO1 128 +#define R9A06G032_HCLK_SEMAP 129 +#define R9A06G032_HCLK_SPI0 130 +#define R9A06G032_HCLK_SPI1 131 +#define R9A06G032_HCLK_SPI2 132 +#define R9A06G032_HCLK_SPI3 133 +#define R9A06G032_HCLK_SPI4 134 +#define R9A06G032_HCLK_SPI5 135 +#define R9A06G032_HCLK_SWITCH 136 +#define R9A06G032_HCLK_SWITCH_RG 137 +#define R9A06G032_HCLK_UART0 138 +#define R9A06G032_HCLK_UART1 139 +#define R9A06G032_HCLK_UART2 140 +#define R9A06G032_HCLK_UART3 141 +#define R9A06G032_HCLK_UART4 142 +#define R9A06G032_HCLK_UART5 143 +#define R9A06G032_HCLK_UART6 144 +#define R9A06G032_HCLK_UART7 145 +#define R9A06G032_CLK_UART0 146 +#define R9A06G032_CLK_UART1 147 +#define R9A06G032_CLK_UART2 148 +#define R9A06G032_CLK_UART3 149 +#define R9A06G032_CLK_UART4 150 +#define R9A06G032_CLK_UART5 151 +#define R9A06G032_CLK_UART6 152 +#define R9A06G032_CLK_UART7 153 + +#endif /* __DT_BINDINGS_R9A06G032_SYSCTRL_H__ */