linux-kernel - Re: [PATCH 2/5 v4] arm: omap: usb: ehci and ohci hwmod structures for omap3

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Message-ID: <CAP05o4JDz_53k73-yUXn4S3hFNZ=ccEhaee-U53M+M6qm41Y=A@mail.gmail.com>
Date:	Fri, 12 Aug 2011 11:16:35 +0530
From:	"Munegowda, Keshava" <keshava_mgowda@...com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, balbi@...com, gadiyar@...com,
	sameo@...ux.intel.com, parthab@...ia.ti.com, tony@...mide.com,
	khilman@...com, b-cousson@...com, paul@...an.com,
	johnstul@...ibm.com, vishwanath.bs@...com
Subject: Re: [PATCH 2/5 v4] arm: omap: usb: ehci and ohci hwmod structures for omap3

On Thu, Aug 11, 2011 at 8:53 PM, Ming Lei <tom.leiming@...il.com> wrote:
> Hi,
>
> On Tue, Aug 9, 2011 at 10:15 PM, Keshava Munegowda
> <keshava_mgowda@...com> wrote:
>> Following 4 hwmod strcuture are added:
>> UHH hwmod of usbhs with uhh base address and functional clock,
>> EHCI hwmod with irq and base address,
>> OHCI hwmod with irq and base address,
>> TLL hwmod of usbhs with the TLL base address and irq.
>>
>> Signed-off-by: Keshava Munegowda <keshava_mgowda@...com>
>> ---
>>  arch/arm/mach-omap2/omap_hwmod_3xxx_data.c |  279 ++++++++++++++++++++++++++++
>>  1 files changed, 279 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
>> index 59fdb9f..d7316b3 100644
>> --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
>> +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
>> @@ -84,6 +84,10 @@ static struct omap_hwmod omap3xxx_mcbsp4_hwmod;
>>  static struct omap_hwmod omap3xxx_mcbsp5_hwmod;
>>  static struct omap_hwmod omap3xxx_mcbsp2_sidetone_hwmod;
>>  static struct omap_hwmod omap3xxx_mcbsp3_sidetone_hwmod;
>> +static struct omap_hwmod omap34xx_usb_host_hs_hwmod;
>> +static struct omap_hwmod omap34xx_usbhs_ohci_hwmod;
>> +static struct omap_hwmod omap34xx_usbhs_ehci_hwmod;
>> +static struct omap_hwmod omap34xx_usb_tll_hs_hwmod;
>>
>>  /* L3 -> L4_CORE interface */
>>  static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = {
>> @@ -3196,6 +3200,276 @@ static struct omap_hwmod omap3xxx_mmc3_hwmod = {
>>        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
>>  };
>>
>> +/*
>> + * 'usb_host_hs' class
>> + * high-speed multi-port usb host controller
>> + */
>> +static struct omap_hwmod_ocp_if omap34xx_usb_host_hs__l3_main_2 = {
>> +       .master         = &omap34xx_usb_host_hs_hwmod,
>> +       .slave          = &omap3xxx_l3_main_hwmod,
>> +       .clk            = "core_l3_ick",
>> +       .user           = OCP_USER_MPU,
>> +};
>> +
>> +static struct omap_hwmod_class_sysconfig omap34xx_usb_host_hs_sysc = {
>> +       .rev_offs       = 0x0000,
>> +       .sysc_offs      = 0x0010,
>> +       .syss_offs      = 0x0014,
>> +       .sysc_flags     = (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE),
>
> SYSC_HAS_ENAWAKEUP is missed or not needed?

not needed. wakeup will through irq-chaining mechanism.

>
>> +       .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
>> +                          MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
>> +       .sysc_fields    = &omap_hwmod_sysc_type1,
>> +};
>> +
>> +static struct omap_hwmod_class omap34xx_usb_host_hs_hwmod_class = {
>> +       .name = "usbhs_uhh",
>> +       .sysc = &omap34xx_usb_host_hs_sysc,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap34xx_usb_host_hs_masters[] = {
>> +       &omap34xx_usb_host_hs__l3_main_2,
>> +};
>> +
>> +static struct omap_hwmod_addr_space omap34xx_usb_host_hs_addrs[] = {
>> +       {
>> +               .name           = "uhh",
>> +               .pa_start       = 0x48064000,
>> +               .pa_end         = 0x480643ff,
>> +               .flags          = ADDR_TYPE_RT
>> +       },
>> +       {} /* Terminating Entry */
>> +};
>> +
>> +static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usb_host_hs = {
>> +       .master         = &omap3xxx_l4_core_hwmod,
>> +       .slave          = &omap34xx_usb_host_hs_hwmod,
>> +       .clk            = "l4_ick",
>> +       .addr           = omap34xx_usb_host_hs_addrs,
>> +       .user           = OCP_USER_MPU | OCP_USER_SDMA,
>> +};
>
> Even USBHOST_L4_ICLK is used only by USBHOST_SICLK, it is better to
> define a "usbhost_siclk" clk for consistence with TRM.

I dint understand, what is the change you are suggesting?

keshava
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