nds32: Support AG101P timer DM.

Support AG101P timer device tree flow.

Signed-off-by: rick <rick@andestech.com>

diff --git a/arch/nds32/cpu/n1213/ag101/timer.c b/arch/nds32/cpu/n1213/ag101/timer.c
index 758b354..0c03a10 100644 (file)
--- a/arch/nds32/cpu/n1213/ag101/timer.c
+++ b/arch/nds32/cpu/n1213/ag101/timer.c
@@ -8,7 +8,7 @@
  *
  * SPDX-License-Identifier:    GPL-2.0+
  */
-
+#ifndef CONFIG_TIMER
 #include <common.h>
 #include <asm/io.h>
 #include <faraday/fttmr010.h>
@@ -189,3 +189,4 @@ ulong get_tbclk(void)
        return CONFIG_SYS_CLK_FREQ;
 #endif
 }
+#endif /* CONFIG_TIMER */

diff --git a/arch/nds32/dts/ag101p.dts b/arch/nds32/dts/ag101p.dts
index 2baa3dc..91314b5 100644 (file)
--- a/arch/nds32/dts/ag101p.dts
+++ b/arch/nds32/dts/ag101p.dts
@@ -13,6 +13,7 @@
                /* bootargs = "console=ttyS0,38400n8 earlyprintk=uart8250-32bit,0x99600000 debug bootmem_debug memblock=debug loglevel=7"; */
                bootargs = "console=ttyS0,38400n8 earlyprintk=uart8250-32bit,0x99600000 debug loglevel=7";
                stdout-path = "uart0:38400n8";
+               tick-timer = &timer0;
        };
 
        memory@0 {
@@ -46,4 +47,11 @@
                no-loopback-test = <1>;
        };
 
+       timer0: timer@98400000 {
+               compatible = "andestech,attmr010";
+               reg = <0x98400000 0x1000>;
+               interrupts = <19 4>;
+               clock-frequency = <15000000>;
+       };
+
 };

diff --git a/configs/adp-ag101p_defconfig b/configs/adp-ag101p_defconfig
index 2a7302f..685a961 100644 (file)
--- a/configs/adp-ag101p_defconfig
+++ b/configs/adp-ag101p_defconfig
@@ -18,3 +18,5 @@ CONFIG_OF_CONTROL=y
 CONFIG_DM=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
+CONFIG_TIMER=y
+CONFIG_AG101P_TIMER=y

diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig
index e038523..356fa29 100644 (file)
--- a/drivers/timer/Kconfig
+++ b/drivers/timer/Kconfig
@@ -74,4 +74,10 @@ config ARC_TIMER
          usually at least one of them exists. Either of them is supported
          in U-Boot.
 
+config AG101P_TIMER
+       bool "Ag101p timer support"
+       depends on TIMER
+       help
+         Select this to enable a timer for Ag101p devices.
+
 endmenu

diff --git a/drivers/timer/Makefile b/drivers/timer/Makefile
index bfe65fc..3dad956 100644 (file)
--- a/drivers/timer/Makefile
+++ b/drivers/timer/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_OMAP_TIMER)      += omap-timer.o
 obj-$(CONFIG_AST_TIMER)        += ast_timer.o
 obj-$(CONFIG_STI_TIMER)                += sti-timer.o
 obj-$(CONFIG_ARC_TIMER)        += arc_timer.o
+obj-$(CONFIG_AG101P_TIMER) += ag101p_timer.o

diff --git a/drivers/timer/ag101p_timer.c b/drivers/timer/ag101p_timer.c
new file mode 100644 (file)
index 0000000..163402f
--- /dev/null
+++ b/drivers/timer/ag101p_timer.c
@@ -0,0 +1,122 @@
+/*
+ * Andestech ATFTMR010 timer driver
+ *
+ * (C) Copyright 2016
+ * Rick Chen, NDS32 Software Engineering, rick@andestech.com
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <timer.h>
+#include <linux/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Timer Control Register
+ */
+#define T3_UPDOWN      (1 << 11)
+#define T2_UPDOWN      (1 << 10)
+#define T1_UPDOWN      (1 << 9)
+#define T3_OFENABLE    (1 << 8)
+#define T3_CLOCK       (1 << 7)
+#define T3_ENABLE      (1 << 6)
+#define T2_OFENABLE    (1 << 5)
+#define T2_CLOCK       (1 << 4)
+#define T2_ENABLE      (1 << 3)
+#define T1_OFENABLE    (1 << 2)
+#define T1_CLOCK       (1 << 1)
+#define T1_ENABLE      (1 << 0)
+
+/*
+ * Timer Interrupt State & Mask Registers
+ */
+#define T3_OVERFLOW    (1 << 8)
+#define T3_MATCH2      (1 << 7)
+#define T3_MATCH1      (1 << 6)
+#define T2_OVERFLOW    (1 << 5)
+#define T2_MATCH2      (1 << 4)
+#define T2_MATCH1      (1 << 3)
+#define T1_OVERFLOW    (1 << 2)
+#define T1_MATCH2      (1 << 1)
+#define T1_MATCH1      (1 << 0)
+
+struct atftmr_timer_regs {
+       u32     t1_counter;             /* 0x00 */
+       u32     t1_load;                /* 0x04 */
+       u32     t1_match1;              /* 0x08 */
+       u32     t1_match2;              /* 0x0c */
+       u32     t2_counter;             /* 0x10 */
+       u32     t2_load;                /* 0x14 */
+       u32     t2_match1;              /* 0x18 */
+       u32     t2_match2;              /* 0x1c */
+       u32     t3_counter;             /* 0x20 */
+       u32     t3_load;                /* 0x24 */
+       u32     t3_match1;              /* 0x28 */
+       u32     t3_match2;              /* 0x2c */
+       u32     cr;                     /* 0x30 */
+       u32     int_state;              /* 0x34 */
+       u32     int_mask;               /* 0x38 */
+};
+
+struct atftmr_timer_platdata {
+       struct atftmr_timer_regs *regs;
+};
+
+static int atftmr_timer_get_count(struct udevice *dev, u64 *count)
+{
+       struct atftmr_timer_platdata *plat = dev->platdata;
+       struct atftmr_timer_regs *const regs = plat->regs;
+       u32 val;
+       val = readl(&regs->t3_counter);
+       *count = timer_conv_64(val);
+       return 0;
+}
+
+static int atftmr_timer_probe(struct udevice *dev)
+{
+       struct atftmr_timer_platdata *plat = dev->platdata;
+       struct atftmr_timer_regs *const regs = plat->regs;
+       u32 cr;
+       writel(0, &regs->t3_load);
+       writel(0, &regs->t3_counter);
+       writel(TIMER_LOAD_VAL, &regs->t3_match1);
+       writel(TIMER_LOAD_VAL, &regs->t3_match2);
+       /* disable interrupts */
+       writel(T3_MATCH1|T3_MATCH2|T3_OVERFLOW , &regs->int_mask);
+       cr = readl(&regs->cr);
+       cr |= (T3_ENABLE|T3_UPDOWN);
+       writel(cr, &regs->cr);
+       return 0;
+}
+
+static int atftme_timer_ofdata_to_platdata(struct udevice *dev)
+{
+       struct atftmr_timer_platdata *plat = dev_get_platdata(dev);
+       plat->regs = map_physmem(dev_get_addr(dev),
+                                sizeof(struct atftmr_timer_regs),
+                                MAP_NOCACHE);
+       return 0;
+}
+
+static const struct timer_ops ag101p_timer_ops = {
+       .get_count = atftmr_timer_get_count,
+};
+
+static const struct udevice_id ag101p_timer_ids[] = {
+       { .compatible = "andestech,attmr010" },
+       {}
+};
+
+U_BOOT_DRIVER(altera_timer) = {
+       .name   = "ag101p_timer",
+       .id     = UCLASS_TIMER,
+       .of_match = ag101p_timer_ids,
+       .ofdata_to_platdata = atftme_timer_ofdata_to_platdata,
+       .platdata_auto_alloc_size = sizeof(struct atftmr_timer_platdata),
+       .probe = atftmr_timer_probe,
+       .ops    = &ag101p_timer_ops,
+       .flags = DM_FLAG_PRE_RELOC,
+};