[PATCH v8 21/42] ARM: davinci: da830: add new clock init using common clock framework

David Lechner
2018-03-16T02:54:01Z

This adds the new board-specific clock init in mach-davinci/da830.c
using the new common clock framework drivers.

The #ifdefs are needed to prevent compile errors until the entire
ARCH_DAVINCI is converted.

Also clean up the #includes since we are adding some here.

Signed-off-by: David Lechner <david@lechnology.com>
---

v8 changes:
- none

v7 changes:
- add clock platform device declarations
- register platform devices instead of registering clocks directly
- clkdev lookup is moved to drivers/clk
- add davinci prefix to commit description

v6 changes:
- add blank lines between function calls
- include da8xx_register_cfgchip()

arch/arm/mach-davinci/board-da830-evm.c | 2 +
arch/arm/mach-davinci/da830.c | 77 +++++++++++++++++++++++++++---
arch/arm/mach-davinci/include/mach/da8xx.h | 1 +
3 files changed, 74 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 004f9c8..3973124 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -551,6 +551,8 @@ static __init void da830_evm_init(void)
struct davinci_soc_info *soc_info = &davinci_soc_info;
int ret;

+ da830_register_clocks();
+
ret = da830_register_gpio();
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
index 0b17e5a..c1c2604 100644
--- a/arch/arm/mach-davinci/da830.c
+++ b/arch/arm/mach-davinci/da830.c
@@ -8,23 +8,26 @@
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
+#include <linux/clk-provider.h>
#include <linux/gpio.h>
#include <linux/init.h>
-#include <linux/clk.h>
#include <linux/platform_data/gpio-davinci.h>

#include <asm/mach/map.h>

-#include "psc.h"
-#include <mach/irqs.h>
-#include <mach/cputype.h>
#include <mach/common.h>
-#include <mach/time.h>
+#include <mach/cputype.h>
#include <mach/da8xx.h>
+#include <mach/irqs.h>
+#include <mach/time.h>

-#include "clock.h"
#include "mux.h"

+#ifndef CONFIG_COMMON_CLK
+#include "clock.h"
+#include "psc.h"
+#endif
+
/* Offsets of the 8 compare registers on the da830 */
#define DA830_CMP12_0 0x60
#define DA830_CMP12_1 0x64
@@ -37,6 +40,7 @@

#define DA830_REF_FREQ 24000000

+#ifndef CONFIG_COMMON_CLK
static struct pll_data pll0_data = {
.num = 1,
.phys_base = DA8XX_PLL0_BASE,
@@ -432,6 +436,7 @@ static struct clk_lookup da830_clks[] = {
CLK(NULL, "rmii", &rmii_clk),
CLK(NULL, NULL, NULL),
};
+#endif

/*
* Device specific mux setup
@@ -1223,6 +1228,66 @@ void __init da830_init(void)

void __init da830_init_time(void)
{
+#ifdef CONFIG_COMMON_CLK
+ struct clk *clk;
+
+ clk = clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DA830_REF_FREQ);
+
+ davinci_timer_init(clk);
+#else
davinci_clk_init(da830_clks);
davinci_timer_init(&timerp64_0_clk);
+#endif
+}
+
+static struct resource da830_pll_resources[] = {
+ {
+ .start = DA8XX_PLL0_BASE,
+ .end = DA8XX_PLL0_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device da830_pll_device = {
+ .name = "da830-pll",
+ .id = -1,
+ .resource = da830_pll_resources,
+ .num_resources = ARRAY_SIZE(da830_pll_resources),
+};
+
+static struct resource da830_psc0_resources[] = {
+ {
+ .start = DA8XX_PSC0_BASE,
+ .end = DA8XX_PSC0_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device da830_psc0_device = {
+ .name = "da830-psc0",
+ .id = -1,
+ .resource = da830_psc0_resources,
+ .num_resources = ARRAY_SIZE(da830_psc0_resources),
+};
+
+static struct resource da830_psc1_resources[] = {
+ {
+ .start = DA8XX_PSC1_BASE,
+ .end = DA8XX_PSC1_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device da830_psc1_device = {
+ .name = "da830-psc1",
+ .id = -1,
+ .resource = da830_psc1_resources,
+ .num_resources = ARRAY_SIZE(da830_psc1_resources),
+};
+
+void __init da830_register_clocks(void)
+{
+ platform_device_register(&da830_pll_device);
+ platform_device_register(&da830_psc0_device);
+ platform_device_register(&da830_psc1_device);
}
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 9fd6d01..64861ac 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -89,6 +89,7 @@ extern unsigned int da850_max_speed;

void da830_init(void);
void da830_init_time(void);
+void da830_register_clocks(void);

void da850_init(void);
void da850_init_time(void);
--
2.7.4