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Message-ID: <CAP05o4JMnhd+59ocTw+z9a7ukSmDn1deL5T4D9q5ZeKw_tEg0w@mail.gmail.com>
Date: Fri, 14 Oct 2011 15:23:08 +0530
From: "Munegowda, Keshava" <keshava_mgowda@...com>
To: Paul Walmsley <paul@...an.com>
Cc: linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
linux-kernel@...r.kernel.org, balbi@...com, khilman@...com,
b-cousson@...com, gadiyar@...com, sameo@...ux.intel.com,
parthab@...ia.ti.com, tony@...mide.com, johnstul@...ibm.com,
vishwanath.bs@...com
Subject: Re: [PATCH 2/5 v14] arm: omap: usb: ehci and ohci hwmod structures
for omap3
On Fri, Oct 14, 2011 at 6:33 AM, Paul Walmsley <paul@...an.com> wrote:
>
> Hi
>
> I probably shouldn't have, but I've gone ahead and fixed a bunch of issues
> with this patch locally. Modified patch below. Please give it a test and
> ensure that it works for you.
>
>
> - Paul
>
> From: Keshava Munegowda <keshava_mgowda@...com>
> Date: Thu, 13 Oct 2011 17:27:28 -0600
> Subject: [PATCH] ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP3
>
> Following 2 hwmod structures are added
> 1. usb_host_hs
> The hwmod of usbhs with uhh, ehci and ohci base addresses
> functional clock and ehci, ohci irqs
>
> 2. usb_tll_hs
> hwmod of usbhs with the TLL base address and irq.
>
> Signed-off-by: Keshava Munegowda <keshava_mgowda@...com>
> Reviewed-by: Partha Basak <parthab@...ia.ti.com>
> [paul@...an.com: fixed whitespace; removed nonexistent TLL->L4 CORE interface;
> added master & slave for L4 CORE->TLL interface; skip registration on
> 3430ES1; fixed multiline comment style; updated to apply on Tony's cleanup
> branch]
> Signed-off-by: Paul Walmsley <paul@...an.com>
> ---
> arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 221 ++++++++++++++++++++++++++++
> 1 files changed, 221 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 ab35acb..060543e 100644
> --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
> +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
> @@ -84,6 +84,8 @@ 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 omap3xxx_usb_host_hs_hwmod;
> +static struct omap_hwmod omap3xxx_usb_tll_hs_hwmod;
>
> /* L3 -> L4_CORE interface */
> static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = {
> @@ -3123,6 +3125,218 @@ static struct omap_hwmod omap3xxx_mmc3_hwmod = {
> .class = &omap34xx_mmc_class,
> };
>
> +/*
> + * 'usb_host_hs' class
> + * high-speed multi-port usb host controller
> + */
> +static struct omap_hwmod_ocp_if omap3xxx_usb_host_hs__l3_main_2 = {
> + .master = &omap3xxx_usb_host_hs_hwmod,
> + .slave = &omap3xxx_l3_main_hwmod,
> + .clk = "core_l3_ick",
> + .user = OCP_USER_MPU,
> +};
> +
> +static struct omap_hwmod_class_sysconfig omap3xxx_usb_host_hs_sysc = {
> + .rev_offs = 0x0000,
> + .sysc_offs = 0x0010,
> + .syss_offs = 0x0014,
> + .sysc_flags = (SYSC_HAS_MIDLEMODE | SYSC_HAS_CLOCKACTIVITY |
> + SYSC_HAS_SIDLEMODE | SYSC_HAS_ENAWAKEUP |
> + SYSC_HAS_SOFTRESET | SYSC_HAS_AUTOIDLE),
> + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
> + MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
> + .sysc_fields = &omap_hwmod_sysc_type1,
> +};
> +
> +static struct omap_hwmod_class omap3xxx_usb_host_hs_hwmod_class = {
> + .name = "usb_host_hs",
> + .sysc = &omap3xxx_usb_host_hs_sysc,
> +};
> +
> +static struct omap_hwmod_ocp_if *omap3xxx_usb_host_hs_masters[] = {
> + &omap3xxx_usb_host_hs__l3_main_2,
> +};
> +
> +static struct omap_hwmod_addr_space omap3xxx_usb_host_hs_addrs[] = {
> + {
> + .name = "uhh",
> + .pa_start = 0x48064000,
> + .pa_end = 0x480643ff,
> + .flags = ADDR_TYPE_RT
> + },
> + {
> + .name = "ohci",
> + .pa_start = 0x48064400,
> + .pa_end = 0x480647ff,
> + },
> + {
> + .name = "ehci",
> + .pa_start = 0x48064800,
> + .pa_end = 0x48064cff,
> + },
> + {}
> +};
> +
> +static struct omap_hwmod_ocp_if omap3xxx_l4_core__usb_host_hs = {
> + .master = &omap3xxx_l4_core_hwmod,
> + .slave = &omap3xxx_usb_host_hs_hwmod,
> + .clk = "usbhost_ick",
> + .addr = omap3xxx_usb_host_hs_addrs,
> + .user = OCP_USER_MPU | OCP_USER_SDMA,
> +};
> +
> +static struct omap_hwmod_ocp_if *omap3xxx_usb_host_hs_slaves[] = {
> + &omap3xxx_l4_core__usb_host_hs,
> +};
> +
> +static struct omap_hwmod_opt_clk omap3xxx_usb_host_hs_opt_clks[] = {
> + { .role = "ehci_logic_fck", .clk = "usbhost_120m_fck", },
> +};
> +
> +static struct omap_hwmod_irq_info omap3xxx_usb_host_hs_irqs[] = {
> + { .name = "ohci-irq", .irq = 76 },
> + { .name = "ehci-irq", .irq = 77 },
> + { .irq = -1 }
> +};
> +
> +static struct omap_hwmod omap3xxx_usb_host_hs_hwmod = {
> + .name = "usb_host_hs",
> + .class = &omap3xxx_usb_host_hs_hwmod_class,
> + .clkdm_name = "l3_init_clkdm",
> + .mpu_irqs = omap3xxx_usb_host_hs_irqs,
> + .main_clk = "usbhost_48m_fck",
> + .prcm = {
> + .omap2 = {
> + .module_offs = OMAP3430ES2_USBHOST_MOD,
> + .prcm_reg_id = 1,
> + .module_bit = OMAP3430ES2_EN_USBHOST1_SHIFT,
> + .idlest_reg_id = 1,
> + .idlest_idle_bit = OMAP3430ES2_ST_USBHOST_IDLE_SHIFT,
> + .idlest_stdby_bit = OMAP3430ES2_ST_USBHOST_STDBY_SHIFT,
> + },
> + },
> + .opt_clks = omap3xxx_usb_host_hs_opt_clks,
> + .opt_clks_cnt = ARRAY_SIZE(omap3xxx_usb_host_hs_opt_clks),
> + .slaves = omap3xxx_usb_host_hs_slaves,
> + .slaves_cnt = ARRAY_SIZE(omap3xxx_usb_host_hs_slaves),
> + .masters = omap3xxx_usb_host_hs_masters,
> + .masters_cnt = ARRAY_SIZE(omap3xxx_usb_host_hs_masters),
> +
> + /*
> + * Errata: USBHOST Configured In Smart-Idle Can Lead To a Deadlock
> + * id: i660
> + *
> + * Description:
> + * In the following configuration :
> + * - USBHOST module is set to smart-idle mode
> + * - PRCM asserts idle_req to the USBHOST module ( This typically
> + * happens when the system is going to a low power mode : all ports
> + * have been suspended, the master part of the USBHOST module has
> + * entered the standby state, and SW has cut the functional clocks)
> + * - an USBHOST interrupt occurs before the module is able to answer
> + * idle_ack, typically a remote wakeup IRQ.
> + * Then the USB HOST module will enter a deadlock situation where it
> + * is no more accessible nor functional.
> + *
> + * Workaround:
> + * Don't use smart idle; use only force idle, hence HWMOD_SWSUP_SIDLE
> + */
> +
> + /*
> + * Errata: USB host EHCI may stall when entering smart-standby mode
> + * Id: i571
> + *
> + * Description:
> + * When the USBHOST module is set to smart-standby mode, and when it is
> + * ready to enter the standby state (i.e. all ports are suspended and
> + * all attached devices are in suspend mode), then it can wrongly assert
> + * the Mstandby signal too early while there are still some residual OCP
> + * transactions ongoing. If this condition occurs, the internal state
> + * machine may go to an undefined state and the USB link may be stuck
> + * upon the next resume.
> + *
> + * Workaround:
> + * Don't use smart standby; use only force standby,
> + * hence HWMOD_SWSUP_MSTANDBY
> + */
> +
> + /*
> + * During system boot; If the hwmod framework resets the module
> + * the module will have smart idle settings; which can lead to deadlock
> + * (above Errata Id:i660); so, dont reset the module during boot;
> + * Use HWMOD_INIT_NO_RESET.
> + */
> +
> + .flags = HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY |
> + HWMOD_INIT_NO_RESET,
> +};
> +
> +/*
> + * 'usb_tll_hs' class
> + * usb_tll_hs module is the adapter on the usb_host_hs ports
> + */
> +static struct omap_hwmod_class_sysconfig omap3xxx_usb_tll_hs_sysc = {
> + .rev_offs = 0x0000,
> + .sysc_offs = 0x0010,
> + .syss_offs = 0x0014,
> + .sysc_flags = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
> + SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
> + SYSC_HAS_AUTOIDLE),
> + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
> + .sysc_fields = &omap_hwmod_sysc_type1,
> +};
> +
> +static struct omap_hwmod_class omap3xxx_usb_tll_hs_hwmod_class = {
> + .name = "usb_tll_hs",
> + .sysc = &omap3xxx_usb_tll_hs_sysc,
> +};
> +
> +static struct omap_hwmod_irq_info omap3xxx_usb_tll_hs_irqs[] = {
> + { .name = "tll-irq", .irq = 78 },
> + { .irq = -1 }
> +};
> +
> +static struct omap_hwmod_addr_space omap3xxx_usb_tll_hs_addrs[] = {
> + {
> + .name = "tll",
> + .pa_start = 0x48062000,
> + .pa_end = 0x48062fff,
> + .flags = ADDR_TYPE_RT
> + },
> + {}
> +};
> +
> +static struct omap_hwmod_ocp_if omap3xxx_l4_core__usb_tll_hs = {
> + .master = &omap3xxx_l4_core_hwmod,
> + .slave = &omap3xxx_usb_tll_hs_hwmod,
> + .clk = "usbtll_ick",
> + .addr = omap3xxx_usb_tll_hs_addrs,
> + .user = OCP_USER_MPU | OCP_USER_SDMA,
> +};
> +
> +static struct omap_hwmod_ocp_if *omap3xxx_usb_tll_hs_slaves[] = {
> + &omap3xxx_l4_core__usb_tll_hs,
> +};
> +
> +static struct omap_hwmod omap3xxx_usb_tll_hs_hwmod = {
> + .name = "usb_tll_hs",
> + .class = &omap3xxx_usb_tll_hs_hwmod_class,
> + .clkdm_name = "l3_init_clkdm",
> + .mpu_irqs = omap3xxx_usb_tll_hs_irqs,
> + .main_clk = "usbtll_fck",
> + .prcm = {
> + .omap2 = {
> + .module_offs = CORE_MOD,
> + .prcm_reg_id = 3,
> + .module_bit = OMAP3430ES2_EN_USBTLL_SHIFT,
> + .idlest_reg_id = 3,
> + .idlest_idle_bit = OMAP3430ES2_ST_USBTLL_SHIFT,
> + },
> + },
> + .slaves = omap3xxx_usb_tll_hs_slaves,
> + .slaves_cnt = ARRAY_SIZE(omap3xxx_usb_tll_hs_slaves),
> +};
> +
> static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
> &omap3xxx_l3_main_hwmod,
> &omap3xxx_l4_core_hwmod,
> @@ -3151,6 +3365,7 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
> &omap3xxx_uart1_hwmod,
> &omap3xxx_uart2_hwmod,
> &omap3xxx_uart3_hwmod,
> +
> /* dss class */
> &omap3xxx_dss_dispc_hwmod,
> &omap3xxx_dss_dsi1_hwmod,
> @@ -3206,6 +3421,8 @@ static __initdata struct omap_hwmod *omap3430es1_hwmods[] = {
> static __initdata struct omap_hwmod *omap3430es2plus_hwmods[] = {
> &omap3xxx_dss_core_hwmod,
> &omap3xxx_usbhsotg_hwmod,
> + &omap3xxx_usb_host_hs_hwmod,
> + &omap3xxx_usb_tll_hs_hwmod,
> NULL
> };
>
> @@ -3223,12 +3440,16 @@ static __initdata struct omap_hwmod *omap36xx_hwmods[] = {
> &omap36xx_sr1_hwmod,
> &omap36xx_sr2_hwmod,
> &omap3xxx_usbhsotg_hwmod,
> + &omap3xxx_usb_host_hs_hwmod,
> + &omap3xxx_usb_tll_hs_hwmod,
> NULL
> };
>
> static __initdata struct omap_hwmod *am35xx_hwmods[] = {
> &omap3xxx_dss_core_hwmod, /* XXX ??? */
> &am35xx_usbhsotg_hwmod,
> + &omap3xxx_usb_host_hs_hwmod,
> + &omap3xxx_usb_tll_hs_hwmod,
> NULL
> };
>
> --
> 1.7.7
>
This updated patch is working perfectly on 3430 sdp.
regards
keshava
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