[PATCH v2 5/8] ARM: at91: Add sam9x7 soc
Manikandan Muralidharan
manikandan.m at microchip.com
Thu Feb 27 10:35:56 CET 2025
From: Varshini Rajendran <varshini.rajendran at microchip.com>
Add new Microchip sam9x7 SoC based on an ARM926.
Signed-off-by: Varshini Rajendran <varshini.rajendran at microchip.com>
Signed-off-by: Balamanikandan Gunasundar <balamanikandan.gunasundar at microchip.com>
Signed-off-by: Manikandan Muralidharan <manikandan.m at microchip.com>
---
arch/arm/mach-at91/Kconfig | 4 +
arch/arm/mach-at91/arm926ejs/Makefile | 1 +
arch/arm/mach-at91/arm926ejs/sam9x7_devices.c | 49 +++++
arch/arm/mach-at91/include/mach/hardware.h | 2 +
arch/arm/mach-at91/include/mach/sam9x7.h | 172 ++++++++++++++++++
5 files changed, 228 insertions(+)
create mode 100644 arch/arm/mach-at91/arm926ejs/sam9x7_devices.c
create mode 100644 arch/arm/mach-at91/include/mach/sam9x7.h
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 7c4ccc427c8..5429257875d 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -43,6 +43,10 @@ config SAM9X60
bool
select CPU_ARM926EJS
+config SAM9X7
+ bool
+ select CPU_ARM926EJS
+
config SAMA7G5
bool
select CPU_V7A
diff --git a/arch/arm/mach-at91/arm926ejs/Makefile b/arch/arm/mach-at91/arm926ejs/Makefile
index 8f0bc5d997e..977299a5911 100644
--- a/arch/arm/mach-at91/arm926ejs/Makefile
+++ b/arch/arm/mach-at91/arm926ejs/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_AT91SAM9G45) += at91sam9m10g45_devices.o
obj-$(CONFIG_AT91SAM9N12) += at91sam9n12_devices.o
obj-$(CONFIG_AT91SAM9X5) += at91sam9x5_devices.o
obj-$(CONFIG_SAM9X60) += sam9x60_devices.o
+obj-$(CONFIG_SAM9X7) += sam9x7_devices.o
obj-y += clock.o
obj-y += cpu.o
ifndef CONFIG_$(PHASE_)SYSRESET
diff --git a/arch/arm/mach-at91/arm926ejs/sam9x7_devices.c b/arch/arm/mach-at91/arm926ejs/sam9x7_devices.c
new file mode 100644
index 00000000000..c65764a3de4
--- /dev/null
+++ b/arch/arm/mach-at91/arm926ejs/sam9x7_devices.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2025 Microchip Technology Inc. and its subsidiaries
+ */
+
+#include <asm/arch/at91_common.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/gpio.h>
+#include <asm/io.h>
+
+unsigned int get_chip_id(void)
+{
+ /* The 0x40 is the offset of cidr in DBGU */
+ return readl(ATMEL_BASE_DBGU + 0x40);
+}
+
+unsigned int get_extension_chip_id(void)
+{
+ /* The 0x44 is the offset of exid in DBGU */
+ return readl(ATMEL_BASE_DBGU + 0x44);
+}
+
+char *get_cpu_name(void)
+{
+ unsigned int extension_id = get_extension_chip_id();
+
+ if (cpu_is_sam9x7()) {
+ switch (extension_id) {
+ case ARCH_EXID_SAM9X70:
+ return "SAM9X70";
+ case ARCH_EXID_SAM9X72:
+ return "SAM9X72";
+ case ARCH_EXID_SAM9X75:
+ return "SAM9X75";
+ case ARCH_EXID_SAM9X75_D1M:
+ return "SAM9X75 16MB DDR2 SiP";
+ case ARCH_EXID_SAM9X75_D5M:
+ return "SAM9X75 64MB DDR2 SiP";
+ case ARCH_EXID_SAM9X75_D1G:
+ return "SAM9X75 125MB DDR3L SiP";
+ case ARCH_EXID_SAM9X75_D2G:
+ return "SAM9X75 250MB DDR3L SiP";
+ default:
+ return "Unknown CPU type";
+ }
+ } else {
+ return "Unknown CPU type";
+ }
+}
diff --git a/arch/arm/mach-at91/include/mach/hardware.h b/arch/arm/mach-at91/include/mach/hardware.h
index 988ef492b62..de89714b097 100644
--- a/arch/arm/mach-at91/include/mach/hardware.h
+++ b/arch/arm/mach-at91/include/mach/hardware.h
@@ -23,6 +23,8 @@
# include <asm/arch/at91sam9x5.h>
#elif defined(CONFIG_SAM9X60)
# include <asm/arch/sam9x60.h>
+#elif defined(CONFIG_SAM9X7)
+# include <asm/arch/sam9x7.h>
#elif defined(CONFIG_SAMA7G5)
# include <asm/arch/sama7g5.h>
#elif defined(CONFIG_SAMA5D2)
diff --git a/arch/arm/mach-at91/include/mach/sam9x7.h b/arch/arm/mach-at91/include/mach/sam9x7.h
new file mode 100644
index 00000000000..998fa786f90
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/sam9x7.h
@@ -0,0 +1,172 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Chip-specific header file for the SAM9X7 SoC.
+ *
+ * Copyright (C) 2025 Microchip Technology Inc. and its subsidiaries
+ */
+
+#ifndef __SAM9X7_H__
+#define __SAM9X7_H__
+
+/*
+ * Peripheral identifiers/interrupts.
+ */
+#define ATMEL_ID_FIQ 0 /* Advanced Interrupt Controller - FIQ */
+#define ATMEL_ID_SYS 1 /* System Controller Interrupt */
+#define ATMEL_ID_PIOA 2 /* Parallel I/O Controller A */
+#define ATMEL_ID_PIOB 3 /* Parallel I/O Controller B */
+#define ATMEL_ID_PIOC 4 /* Parallel I/O Controller C */
+#define ATMEL_ID_FLEXCOM0 5 /* FLEXCOM 0 */
+#define ATMEL_ID_FLEXCOM1 6 /* FLEXCOM 1 */
+#define ATMEL_ID_FLEXCOM2 7 /* FLEXCOM 2 */
+#define ATMEL_ID_FLEXCOM3 8 /* FLEXCOM 3 */
+#define ATMEL_ID_FLEXCOM6 9 /* FLEXCOM 6 */
+#define ATMEL_ID_FLEXCOM7 10 /* FLEXCOM 7 */
+#define ATMEL_ID_FLEXCOM8 11 /* FLEXCOM 8 */
+#define ATMEL_ID_SDMMC0 12 /* SDMMC 0 */
+#define ATMEL_ID_FLEXCOM4 13 /* FLEXCOM 4 */
+#define ATMEL_ID_FLEXCOM5 14 /* FLEXCOM 5 */
+#define ATMEL_ID_FLEXCOM9 15 /* FLEXCOM 9 */
+#define ATMEL_ID_FLEXCOM10 16 /* FLEXCOM 10 */
+#define ATMEL_ID_TC01 17 /* Timer Counter 0, 1, 2, 3, 4 and 5 */
+#define ATMEL_ID_PWM 18 /* Pulse Width Modulation Controller */
+#define ATMEL_ID_ADC 19 /* ADC Controller */
+#define ATMEL_ID_XDMAC0 20 /* XDMA Controller 0 */
+#define ATMEL_ID_MATRIX 21 /* BUS Matrix */
+#define ATMEL_ID_UHPHS 22 /* USB Host High Speed */
+#define ATMEL_ID_UDPHS 23 /* USB Device High Speed */
+#define ATMEL_ID_GMAC 24 /* GMAC */
+#define ATMEL_ID_LCDC 25 /* LCD Controller */
+#define ATMEL_ID_SDMMC1 26 /* SDMMC 1 */
+#define ATMEL_ID_SSC 28 /* Synchronous Serial Controller */
+#define ATMEL_ID_IRQ 31 /* Advanced Interrupt Controller - IRQ */
+#define ATMEL_ID_TRNG 38 /* True Random Number Generator */
+#define ATMEL_ID_PIOD 44 /* Parallel I/O Controller D */
+#define ATMEL_ID_DBGU 47 /* Debug unit */
+
+/*
+ * User Peripheral physical base addresses.
+ */
+#define ATMEL_BASE_FLEXCOM4 0xf0000000
+#define ATMEL_BASE_FLEXCOM5 0xf0004000
+#define ATMEL_BASE_XDMA0 0xf0008000
+#define ATMEL_BASE_SSC 0xf0010000
+#define ATMEL_BASE_QSPI 0xf0014000
+#define ATMEL_BASE_CAN0 0xf8000000
+#define ATMEL_BASE_CAN1 0xf8004000
+#define ATMEL_BASE_TC0 0xf8008000
+#define ATMEL_BASE_TC1 0xf800c000
+#define ATMEL_BASE_FLEXCOM6 0xf8010000
+#define ATMEL_BASE_FLEXCOM7 0xf8014000
+#define ATMEL_BASE_FLEXCOM8 0xf8018000
+#define ATMEL_BASE_FLEXCOM0 0xf801c000
+#define ATMEL_BASE_FLEXCOM1 0xf8020000
+#define ATMEL_BASE_FLEXCOM2 0xf8024000
+#define ATMEL_BASE_FLEXCOM3 0xf8028000
+#define ATMEL_BASE_GMAC 0xf802c000
+#define ATMEL_BASE_PWM 0xf8034000
+#define ATMEL_BASE_LCDC 0xf8038000
+#define ATMEL_BASE_UDPHS 0xf803c000
+#define ATMEL_BASE_FLEXCOM9 0xf8040000
+#define ATMEL_BASE_FLEXCOM10 0xf8044000
+#define ATMEL_BASE_ISC 0xf8048000
+#define ATMEL_BASE_ADC 0xf804c000
+#define ATMEL_BASE_SFR 0xf8050000
+#define ATMEL_BASE_SYS 0xffffc000
+
+/*
+ * System Peripherals
+ */
+#define ATMEL_BASE_MATRIX 0xffffde00
+#define ATMEL_BASE_PMECC 0xffffe000
+#define ATMEL_BASE_PMERRLOC 0xffffe600
+#define ATMEL_BASE_MPDDRC 0xffffe800
+#define ATMEL_BASE_SMC 0xffffea00
+#define ATMEL_BASE_SDRAMC 0xffffec00
+#define ATMEL_BASE_AIC 0xfffff100
+#define ATMEL_BASE_DBGU 0xfffff200
+#define ATMEL_BASE_PIOA 0xfffff400
+#define ATMEL_BASE_PIOB 0xfffff600
+#define ATMEL_BASE_PIOC 0xfffff800
+#define ATMEL_BASE_PIOD 0xfffffa00
+#define ATMEL_BASE_PMC 0xfffffc00
+#define ATMEL_BASE_RSTC 0xfffffe00
+#define ATMEL_BASE_SHDWC 0xfffffe10
+#define ATMEL_BASE_PIT 0xfffffe40
+#define ATMEL_BASE_GPBR 0xfffffe60
+#define ATMEL_BASE_RTC 0xfffffea8
+#define ATMEL_BASE_WDT 0xffffff80
+
+/*
+ * Internal Memory.
+ */
+#define ATMEL_BASE_ROM 0x00100000 /* Internal ROM base address */
+#define ATMEL_BASE_SRAM 0x00300000 /* Internal SRAM base address */
+#define ATMEL_BASE_UDPHS_FIFO 0x00500000 /* USB Device HS controller */
+#define ATMEL_BASE_OHCI 0x00600000 /* USB Host controller (OHCI) */
+#define ATMEL_BASE_EHCI 0x00700000 /* USB Host controller (EHCI) */
+
+/*
+ * External memory
+ */
+#define ATMEL_BASE_CS0 0x10000000
+#define ATMEL_BASE_CS1 0x20000000
+#define ATMEL_BASE_CS2 0x30000000
+#define ATMEL_BASE_CS3 0x40000000
+#define ATMEL_BASE_CS4 0x50000000
+#define ATMEL_BASE_CS5 0x60000000
+#define ATMEL_BASE_SDMMC0 0x80000000
+#define ATMEL_BASE_SDMMC1 0x90000000
+
+/*
+ * SAM9x7 series chip id definitions
+ */
+#define ARCH_ID_SAM9X7 0x89750030
+#define ARCH_EXID_SAM9X70 0x00000005
+#define ARCH_EXID_SAM9X72 0x00000004
+#define ARCH_EXID_SAM9X75 0x00000000
+#define ARCH_EXID_SAM9X75_D1G 0x00000018
+#define ARCH_EXID_SAM9X75_D2G 0x00000020
+#define ARCH_EXID_SAM9X75_D1M 0x00000003
+#define ARCH_EXID_SAM9X75_D5M 0x00000010
+
+#define cpu_is_sam9x7() (get_chip_id() == ARCH_ID_SAM9X7)
+
+/*
+ * Cpu Name
+ */
+#define ATMEL_CPU_NAME get_cpu_name()
+
+/*
+ * Timer
+ */
+#define CFG_SYS_TIMER_COUNTER 0xf0028000
+
+/*
+ * Other misc defines
+ */
+#define ATMEL_PIO_PORTS 4
+#define CPU_HAS_PCR
+#define CPU_NO_PLLB
+#define PLL_ID_PLLA 0
+#define PLL_ID_UPLL 1
+#define PLL_ID_AUDIOPLL 2
+#define PLL_ID_LVDSPLL 3
+#define PLL_ID_PLLA_DIV_2 4
+
+/*
+ * PMECC table in ROM
+ */
+#define ATMEL_PMECC_INDEX_OFFSET_512 0x0000
+#define ATMEL_PMECC_INDEX_OFFSET_1024 0x8000
+
+/*
+ * SAM9X7 specific prototypes
+ */
+#ifndef __ASSEMBLY__
+unsigned int get_chip_id(void);
+unsigned int get_extension_chip_id(void);
+char *get_cpu_name(void);
+#endif
+
+#endif
--
2.25.1
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