summaryrefslogtreecommitdiff
path: root/arch/arm/cpu
diff options
context:
space:
mode:
authorTom Rini <trini@ti.com>2015-01-23 10:22:29 -0500
committerTom Rini <trini@ti.com>2015-01-23 10:22:29 -0500
commit3b95288a2ae8146ca4915250f815c1218b1706fa (patch)
tree6c690f6bcbee74f0c495d7ca646b93fde6be5262 /arch/arm/cpu
parentec0cc98f2cb7fa217ed0a1a54978e2d8f2fbc20c (diff)
parent4e7c892d15e2aa98086aaacdb979821d011b7db2 (diff)
downloadu-boot-imx-3b95288a2ae8146ca4915250f815c1218b1706fa.zip
u-boot-imx-3b95288a2ae8146ca4915250f815c1218b1706fa.tar.gz
u-boot-imx-3b95288a2ae8146ca4915250f815c1218b1706fa.tar.bz2
Merge branch 'master' of http://git.denx.de/u-boot-sunxi
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/armv7/sunxi/Makefile1
-rw-r--r--arch/arm/cpu/armv7/sunxi/clock_sun6i.c5
-rw-r--r--arch/arm/cpu/armv7/sunxi/clock_sun9i.c68
3 files changed, 70 insertions, 4 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile
index 1720f7d..1c4b763 100644
--- a/arch/arm/cpu/armv7/sunxi/Makefile
+++ b/arch/arm/cpu/armv7/sunxi/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_MACH_SUN5I) += clock_sun4i.o
obj-$(CONFIG_MACH_SUN6I) += clock_sun6i.o
obj-$(CONFIG_MACH_SUN7I) += clock_sun4i.o
obj-$(CONFIG_MACH_SUN8I) += clock_sun6i.o
+obj-$(CONFIG_MACH_SUN9I) += clock_sun9i.o
ifndef CONFIG_SPL_BUILD
ifdef CONFIG_ARMV7_PSCI
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
index d7a7040..e2a7867 100644
--- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
@@ -45,10 +45,10 @@ void clock_init_safe(void)
void clock_init_uart(void)
{
+#if CONFIG_CONS_INDEX < 5
struct sunxi_ccm_reg *const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-#if CONFIG_CONS_INDEX < 5
/* uart clock source is apb2 */
writel(APB2_CLK_SRC_OSC24M|
APB2_CLK_RATE_N_1|
@@ -68,9 +68,6 @@ void clock_init_uart(void)
/* enable R_PIO and R_UART clocks, and de-assert resets */
prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_UART);
#endif
-
- /* Dup with clock_init_safe(), drop once sun6i SPL support lands */
- writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg);
}
int clock_twi_onoff(int port, int state)
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun9i.c b/arch/arm/cpu/armv7/sunxi/clock_sun9i.c
new file mode 100644
index 0000000..27179ba
--- /dev/null
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun9i.c
@@ -0,0 +1,68 @@
+/*
+ * sun9i specific clock code
+ *
+ * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/prcm.h>
+#include <asm/arch/sys_proto.h>
+
+void clock_init_uart(void)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ /* open the clock for uart */
+ setbits_le32(&ccm->apb1_gate,
+ CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT +
+ CONFIG_CONS_INDEX - 1));
+ /* deassert uart reset */
+ setbits_le32(&ccm->apb1_reset_cfg,
+ 1 << (APB1_RESET_UART_SHIFT +
+ CONFIG_CONS_INDEX - 1));
+
+ /* Dup with clock_init_safe(), drop once sun9i SPL support lands */
+ writel(PLL4_CFG_DEFAULT, &ccm->pll4_periph0_cfg);
+}
+
+int clock_twi_onoff(int port, int state)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ if (port > 4)
+ return -1;
+
+ /* set the apb reset and clock gate for twi */
+ if (state) {
+ setbits_le32(&ccm->apb1_gate,
+ CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port));
+ setbits_le32(&ccm->apb1_reset_cfg,
+ 1 << (APB1_RESET_UART_SHIFT + port));
+ } else {
+ clrbits_le32(&ccm->apb1_reset_cfg,
+ 1 << (APB1_RESET_UART_SHIFT + port));
+ clrbits_le32(&ccm->apb1_gate,
+ CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port));
+ }
+
+ return 0;
+}
+
+unsigned int clock_get_pll4_periph0(void)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ uint32_t rval = readl(&ccm->pll4_periph0_cfg);
+ int n = ((rval & CCM_PLL4_CTRL_N_MASK) >> CCM_PLL4_CTRL_N_SHIFT);
+ int p = ((rval & CCM_PLL4_CTRL_P_MASK) >> CCM_PLL4_CTRL_P_SHIFT);
+ int m = ((rval & CCM_PLL4_CTRL_M_MASK) >> CCM_PLL4_CTRL_M_SHIFT) + 1;
+ const int k = 1;
+
+ return ((24000000 * n * k) >> p) / m;
+}