Hello Wenyou,
Am 10.12.2015 um 03:20 schrieb Wenyou Yang:
To reduce the duplicated code, add a new file to accommodate
the peripheral's and system's clock handle code, shared with
the SoCs with different ARM core.
Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com>
---
Changes in v3:
- fix incorrectly used the indicator '&' to achieve the variable
pointer of pmc->pcer and pmc->pcdr.
Changes in v2: None
arch/arm/mach-at91/Makefile | 1 +
arch/arm/mach-at91/arm926ejs/clock.c | 7 ----
arch/arm/mach-at91/armv7/clock.c | 26 ------------
arch/arm/mach-at91/clock.c | 72 +++++++++++++++++++++++++++++++++
arch/arm/mach-at91/include/mach/clk.h | 2 +
5 files changed, 75 insertions(+), 33 deletions(-)
create mode 100644 arch/arm/mach-at91/clock.c
Tested on the smartweb board, see log:
http://xeidos.ddns.net/buildbot/builders/smartweb_dfu/builds/29/steps/shell/logs/tbotlog
Tested-by: Heiko Schocher <h...@denx.de>
bye,
Heiko
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 5b89617..d071072 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_SAMA5D4) += mpddrc.o spl_atmel.o matrix.o
atmel_sfr.o
obj-y += spl.o
endif
+obj-y += clock.o
obj-$(CONFIG_CPU_ARM920T) += arm920t/
obj-$(CONFIG_CPU_ARM926EJS) += arm926ejs/
obj-$(CONFIG_CPU_V7) += armv7/
diff --git a/arch/arm/mach-at91/arm926ejs/clock.c
b/arch/arm/mach-at91/arm926ejs/clock.c
index 8d6934e..c8b5e10 100644
--- a/arch/arm/mach-at91/arm926ejs/clock.c
+++ b/arch/arm/mach-at91/arm926ejs/clock.c
@@ -242,10 +242,3 @@ void at91_mck_init(u32 mckr)
while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY))
;
}
-
-void at91_periph_clk_enable(int id)
-{
- struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
-
- writel(1 << id, &pmc->pcer);
-}
diff --git a/arch/arm/mach-at91/armv7/clock.c b/arch/arm/mach-at91/armv7/clock.c
index 41dbf16..81e9f69 100644
--- a/arch/arm/mach-at91/armv7/clock.c
+++ b/arch/arm/mach-at91/armv7/clock.c
@@ -150,32 +150,6 @@ void at91_mck_init(u32 mckr)
;
}
-void at91_periph_clk_enable(int id)
-{
- struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
- u32 regval;
-
- if (id > AT91_PMC_PCR_PID_MASK)
- return;
-
- regval = AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD_WRITE | id;
-
- writel(regval, &pmc->pcr);
-}
-
-void at91_periph_clk_disable(int id)
-{
- struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
- u32 regval;
-
- if (id > AT91_PMC_PCR_PID_MASK)
- return;
-
- regval = AT91_PMC_PCR_CMD_WRITE | id;
-
- writel(regval, &pmc->pcr);
-}
-
int at91_enable_periph_generated_clk(u32 id, u32 clk_source, u32 div)
{
struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
diff --git a/arch/arm/mach-at91/clock.c b/arch/arm/mach-at91/clock.c
new file mode 100644
index 0000000..d1c4b76
--- /dev/null
+++ b/arch/arm/mach-at91/clock.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2015 Atmel Corporation
+ * Wenyou Yang <wenyou.y...@atmel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91_pmc.h>
+
+void at91_periph_clk_enable(int id)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+#ifdef CPU_HAS_PCR
+ u32 regval;
+ u32 div_value;
+
+ if (id > AT91_PMC_PCR_PID_MASK)
+ return;
+
+ writel(id, &pmc->pcr);
+
+ div_value = readl(&pmc->pcr) & AT91_PMC_PCR_DIV;
+
+ regval = AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD_WRITE | id | div_value;
+
+ writel(regval, &pmc->pcr);
+#else
+ u32 mask = 0x01 << (id % 32);
+ void *addr = (id / 32) ? &pmc->pcer1 : &pmc->pcer;
+
+ writel(mask, addr);
+#endif
+}
+
+void at91_periph_clk_disable(int id)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+#ifdef CPU_HAS_PCR
+ u32 regval;
+
+ if (id > AT91_PMC_PCR_PID_MASK)
+ return;
+
+ regval = AT91_PMC_PCR_CMD_WRITE | id;
+
+ writel(regval, &pmc->pcr);
+#else
+ u32 mask = 0x01 << (id % 32);
+ void *addr = (id / 32) ? &pmc->pcdr1 : &pmc->pcdr;
+
+ writel(mask, addr);
+#endif
+}
+
+void at91_system_clk_enable(int sys_clk)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ writel(sys_clk, &pmc->scer);
+}
+
+void at91_system_clk_disable(int sys_clk)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ writel(sys_clk, &pmc->scdr);
+}
diff --git a/arch/arm/mach-at91/include/mach/clk.h
b/arch/arm/mach-at91/include/mach/clk.h
index ad83927..bef4e1c 100644
--- a/arch/arm/mach-at91/include/mach/clk.h
+++ b/arch/arm/mach-at91/include/mach/clk.h
@@ -128,5 +128,7 @@ void at91_periph_clk_enable(int id);
void at91_periph_clk_disable(int id);
int at91_enable_periph_generated_clk(u32 id, u32 clk_source, u32 div);
u32 at91_get_periph_generated_clk(u32 id);
+void at91_system_clk_enable(int sys_clk);
+void at91_system_clk_disable(int sys_clk);
#endif /* __ASM_ARM_ARCH_CLK_H__ */
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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