On 01/19/2017 05:49 PM, Grygorii Strashko wrote:
> On 01/19/2017 09:08 AM, Alexandre Bailon wrote:
>> On 01/19/2017 03:48 PM, Sekhar Nori wrote:
>>> On Thursday 19 January 2017 07:39 PM, Alexandre Bailon wrote:
>>>> Add usb20 to the list of clock supported by PM runtime.
>>>>
>>>> Signed-off-by: Alexandre Bailon <[email protected]>
>>>> ---
>>>> arch/arm/mach-davinci/pm_domain.c | 2 +-
>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/arm/mach-davinci/pm_domain.c
>>>> b/arch/arm/mach-davinci/pm_domain.c
>>>> index 78eac2c..66471f2 100644
>>>> --- a/arch/arm/mach-davinci/pm_domain.c
>>>> +++ b/arch/arm/mach-davinci/pm_domain.c
>>>> @@ -23,7 +23,7 @@ static struct dev_pm_domain davinci_pm_domain = {
>>>>
>>>> static struct pm_clk_notifier_block platform_bus_notifier = {
>>>> .pm_domain = &davinci_pm_domain,
>>>> - .con_ids = { "fck", "master", "slave", NULL },
>>>> + .con_ids = { "fck", "master", "slave", "usb20", NULL },
>>>
>>> Instead of doing this, can we drop the con_id from musb clock? Looking
>>> at the USB clocking diagram in the TRM. There is a single clock input to
>>> the USB 2.0 subsystem. There is no real need for a con_id at all.
>> Currently, the con_id is required to get the usb20 clock from usb-da8xx.c
>> I will try to figure out which changes are required remove con_id.
>
> It most probably should be renamed to "fck" then it should work with your
> patch "[PATCH v3 5/5] usb: musb: da8xx: Add a primary support of PM runtime".
Actually, because of the USB phy, more changes are required.
Something like that works for me.
---
arch/arm/mach-davinci/da850.c | 8 --------
arch/arm/mach-davinci/usb-da8xx.c | 36 ++++++++++++++++++++++--------------
2 files changed, 22 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 1d873d1..c143591 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -394,13 +394,6 @@ static struct clk usb11_clk = {
.gpsc = 1,
};
-static struct clk usb20_clk = {
- .name = "usb20",
- .parent = &pll0_sysclk2,
- .lpsc = DA8XX_LPSC1_USB20,
- .gpsc = 1,
-};
-
static struct clk spi0_clk = {
.name = "spi0",
.parent = &pll0_sysclk2,
@@ -567,7 +560,6 @@ static struct clk_lookup da850_clks[] = {
*/
CLK(NULL, "aemif", &aemif_nand_clk),
CLK("ohci-da8xx", "usb11", &usb11_clk),
- CLK("musb-da8xx", "usb20", &usb20_clk),
CLK("spi_davinci.0", NULL, &spi0_clk),
CLK("spi_davinci.1", NULL, &spi1_clk),
CLK("vpif", NULL, &vpif_clk),
diff --git a/arch/arm/mach-davinci/usb-da8xx.c
b/arch/arm/mach-davinci/usb-da8xx.c
index 9a6af0b..421b4a1 100644
--- a/arch/arm/mach-davinci/usb-da8xx.c
+++ b/arch/arm/mach-davinci/usb-da8xx.c
@@ -16,13 +16,19 @@
#include <mach/cputype.h>
#include <mach/da8xx.h>
#include <mach/irqs.h>
+#include "psc.h"
#include "clock.h"
#define DA8XX_USB0_BASE 0x01e00000
#define DA8XX_USB1_BASE 0x01e25000
-static struct clk *usb20_clk;
+static struct clk usb20_clk = {
+ .name = "usb20",
+ .parent = NULL,
+ .lpsc = DA8XX_LPSC1_USB20,
+ .gpsc = 1,
+};
static struct platform_device da8xx_usb_phy = {
.name = "da8xx-usb-phy",
@@ -166,7 +172,7 @@ static void usb20_phy_clk_enable(struct clk *clk)
val = readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
/* The USB 2.O PLL requires that the USB 2.O PSC is enabled as well. */
- davinci_clk_enable(usb20_clk);
+ davinci_clk_enable(&usb20_clk);
/*
* Turn on the USB 2.0 PHY, but just the PLL, and not OTG. The USB 1.1
@@ -186,7 +192,7 @@ static void usb20_phy_clk_enable(struct clk *clk)
pr_err("Timeout waiting for USB 2.0 PHY clock good\n");
done:
- davinci_clk_disable(usb20_clk);
+ davinci_clk_disable(&usb20_clk);
}
static void usb20_phy_clk_disable(struct clk *clk)
@@ -261,8 +267,10 @@ static struct clk usb20_phy_clk = {
.set_parent = usb20_phy_clk_set_parent,
};
-static struct clk_lookup usb20_phy_clk_lookup =
- CLK("da8xx-usb-phy", "usb20_phy", &usb20_phy_clk);
+static struct clk_lookup usb20_clks[] = {
+ CLK("da8xx-usb-phy", "usb20_phy", &usb20_phy_clk),
+ CLK("musb-da8xx", NULL, &usb20_clk),
+};
/**
* da8xx_register_usb20_phy_clk - register USB0PHYCLKMUX clock
@@ -275,25 +283,25 @@ int __init da8xx_register_usb20_phy_clk(bool
use_usb_refclkin)
struct clk *parent;
int ret;
- usb20_clk = clk_get(&da8xx_usb20_dev.dev, "usb20");
- ret = PTR_ERR_OR_ZERO(usb20_clk);
+
+ parent = clk_get(NULL, "pll0_sysclk2");
+ ret = PTR_ERR_OR_ZERO(parent);
if (ret)
return ret;
+ usb20_clk.parent = parent;
+ clk_put(parent);
+
parent = clk_get(NULL, use_usb_refclkin ? "usb_refclkin" : "pll0_aux");
ret = PTR_ERR_OR_ZERO(parent);
- if (ret) {
- clk_put(usb20_clk);
+ if (ret)
return ret;
- }
usb20_phy_clk.parent = parent;
- ret = clk_register(&usb20_phy_clk);
- if (!ret)
- clkdev_add(&usb20_phy_clk_lookup);
-
clk_put(parent);
+ davinci_clk_init(usb20_clks);
+
return ret;
}
--
2.10.2
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