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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-artpec
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-artpec')
-rw-r--r--arch/arm/mach-artpec/Kconfig22
-rw-r--r--arch/arm/mach-artpec/Makefile2
-rw-r--r--arch/arm/mach-artpec/board-artpec6.c66
3 files changed, 90 insertions, 0 deletions
diff --git a/arch/arm/mach-artpec/Kconfig b/arch/arm/mach-artpec/Kconfig
new file mode 100644
index 000000000..b9a6452d6
--- /dev/null
+++ b/arch/arm/mach-artpec/Kconfig
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig ARCH_ARTPEC
+ bool "Axis Communications ARM based ARTPEC SoCs"
+ depends on ARCH_MULTI_V7
+
+if ARCH_ARTPEC
+
+config MACH_ARTPEC6
+ bool "Axis ARTPEC-6 ARM Cortex A9 Platform"
+ depends on ARCH_MULTI_V7
+ select ARM_AMBA
+ select ARM_GIC
+ select ARM_GLOBAL_TIMER
+ select ARM_PSCI
+ select HAVE_ARM_ARCH_TIMER
+ select HAVE_ARM_SCU
+ select HAVE_ARM_TWD if SMP
+ select MFD_SYSCON
+ help
+ Support for Axis ARTPEC-6 ARM Cortex A9 Platform
+
+endif
diff --git a/arch/arm/mach-artpec/Makefile b/arch/arm/mach-artpec/Makefile
new file mode 100644
index 000000000..fac519012
--- /dev/null
+++ b/arch/arm/mach-artpec/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_MACH_ARTPEC6) := board-artpec6.o
diff --git a/arch/arm/mach-artpec/board-artpec6.c b/arch/arm/mach-artpec/board-artpec6.c
new file mode 100644
index 000000000..d3cf3e860
--- /dev/null
+++ b/arch/arm/mach-artpec/board-artpec6.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ARTPEC-6 device support.
+ */
+
+#include <linux/amba/bus.h>
+#include <linux/clocksource.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/arm-gic.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+#include <linux/smp.h>
+#include <asm/smp_scu.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/psci.h>
+#include <linux/arm-smccc.h>
+
+
+#define ARTPEC6_DMACFG_REGNUM 0x10
+#define ARTPEC6_DMACFG_UARTS_BURST 0xff
+
+#define SECURE_OP_L2C_WRITEREG 0xb4000001
+
+static void __init artpec6_init_machine(void)
+{
+ struct regmap *regmap;
+
+ regmap = syscon_regmap_lookup_by_compatible("axis,artpec6-syscon");
+
+ if (!IS_ERR(regmap)) {
+ /* Use PL011 DMA Burst Request signal instead of DMA
+ * Single Request
+ */
+ regmap_write(regmap, ARTPEC6_DMACFG_REGNUM,
+ ARTPEC6_DMACFG_UARTS_BURST);
+ };
+}
+
+static void artpec6_l2c310_write_sec(unsigned long val, unsigned reg)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_smc(SECURE_OP_L2C_WRITEREG, reg, val, 0,
+ 0, 0, 0, 0, &res);
+
+ WARN_ON(res.a0);
+}
+
+static const char * const artpec6_dt_match[] = {
+ "axis,artpec6",
+ NULL
+};
+
+DT_MACHINE_START(ARTPEC6, "Axis ARTPEC-6 Platform")
+ .l2c_aux_val = 0x0C000000,
+ .l2c_aux_mask = 0xF3FFFFFF,
+ .l2c_write_sec = artpec6_l2c310_write_sec,
+ .init_machine = artpec6_init_machine,
+ .dt_compat = artpec6_dt_match,
+MACHINE_END