[PATCH v9 07/27] ARM: davinci: dm355: add new clock init using common clock framework

David Lechner
2018-04-27T00:17:25Z

This adds the new board-specific clock init in mach-davinci/dm355.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>
---

v9 changes:
- register PLL1 and PSC in dm355_init_time() instead of as platform device so
that we get the correct timer0 clock for davinci_timer_init()
- Fixed size of PLL memory block

v8 changes:
- none

v7 changes:
- add clock platform device declarations
- register platform devices instead of registering clocks directly
- add davinci prefix to commit description

v6 changes:
- add blank lines between function calls

arch/arm/mach-davinci/board-dm355-evm.c | 2 +
arch/arm/mach-davinci/board-dm355-leopard.c | 2 +
arch/arm/mach-davinci/davinci.h | 1 +
arch/arm/mach-davinci/dm355.c | 69 +++++++++++++++++----
4 files changed, 62 insertions(+), 12 deletions(-)

diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
index cb30637d9eaf..ea03ddcd35f5 100644
--- a/arch/arm/mach-davinci/board-dm355-evm.c
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -384,6 +384,8 @@ static __init void dm355_evm_init(void)
struct clk *aemif;
int ret;

+ dm355_register_clocks();
+
ret = dm355_gpio_register();
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c
index 59743bd76793..09f82160bbed 100644
--- a/arch/arm/mach-davinci/board-dm355-leopard.c
+++ b/arch/arm/mach-davinci/board-dm355-leopard.c
@@ -233,6 +233,8 @@ static __init void dm355_leopard_init(void)
struct clk *aemif;
int ret;

+ dm355_register_clocks();
+
ret = dm355_gpio_register();
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/davinci.h b/arch/arm/mach-davinci/davinci.h
index 376cdd51ce9d..c2c634b6578e 100644
--- a/arch/arm/mach-davinci/davinci.h
+++ b/arch/arm/mach-davinci/davinci.h
@@ -84,6 +84,7 @@ int davinci_init_wdt(void);
/* DM355 function declarations */
void dm355_init(void);
void dm355_init_time(void);
+void dm355_register_clocks(void);
void dm355_init_spi0(unsigned chipselect_mask,
const struct spi_board_info *info, unsigned len);
void dm355_init_asp1(u32 evt_enable);
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index 0da7516018ca..14014b942e8a 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -8,31 +8,37 @@
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
-#include <linux/init.h>
-#include <linux/clk.h>
-#include <linux/serial_8250.h>
-#include <linux/platform_device.h>
+
+#include <linux/clk-provider.h>
+#include <linux/clk/davinci.h>
+#include <linux/clkdev.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
-#include <linux/spi/spi.h>
+#include <linux/init.h>
#include <linux/platform_data/edma.h>
#include <linux/platform_data/gpio-davinci.h>
#include <linux/platform_data/spi-davinci.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+#include <linux/spi/spi.h>

#include <asm/mach/map.h>

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

+#include "asp.h"
#include "davinci.h"
-#include "clock.h"
#include "mux.h"
-#include "asp.h"
+
+#ifndef CONFIG_COMMON_CLK
+#include "clock.h"
+#include "psc.h"
+#endif

#define DM355_UART2_BASE (IO_PHYS + 0x206000)
#define DM355_OSD_BASE (IO_PHYS + 0x70200)
@@ -43,6 +49,7 @@
*/
#define DM355_REF_FREQ 24000000 /* 24 or 36 MHz */

+#ifndef CONFIG_COMMON_CLK
static struct pll_data pll1_data = {
.num = 1,
.phys_base = DAVINCI_PLL1_BASE,
@@ -382,7 +389,7 @@ static struct clk_lookup dm355_clks[] = {
CLK(NULL, "usb", &usb_clk),
CLK(NULL, NULL, NULL),
};
-
+#endif
/*----------------------------------------------------------------------*/

static u64 dm355_spi0_dma_mask = DMA_BIT_MASK(32);
@@ -1046,8 +1053,46 @@ void __init dm355_init(void)

void __init dm355_init_time(void)
{
+#ifdef CONFIG_COMMON_CLK
+ void __iomem *pll1, *psc;
+ struct clk *clk;
+
+ clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DM355_REF_FREQ);
+
+ pll1 = ioremap(DAVINCI_PLL1_BASE, SZ_1K);
+ dm355_pll1_init(NULL, pll1, NULL);
+
+ psc = ioremap(DAVINCI_PWR_SLEEP_CNTRL_BASE, SZ_4K);
+ dm355_psc_init(NULL, psc);
+
+ clk = clk_get(NULL, "timer0");
+
+ davinci_timer_init(clk);
+#else
davinci_clk_init(dm355_clks);
davinci_timer_init(&timer0_clk);
+#endif
+}
+
+static struct resource dm355_pll2_resources[] = {
+ {
+ .start = DAVINCI_PLL2_BASE,
+ .end = DAVINCI_PLL2_BASE + SZ_1K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device dm355_pll2_device = {
+ .name = "dm355-pll2",
+ .id = -1,
+ .resource = dm355_pll2_resources,
+ .num_resources = ARRAY_SIZE(dm355_pll2_resources),
+};
+
+void __init dm355_register_clocks(void)
+{
+ /* PLL1 and PSC are registered in dm355_init_time() */
+ platform_device_register(&dm355_pll2_device);
}

int __init dm355_init_video(struct vpfe_config *vpfe_cfg,
--
2.17.0