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Tue, 8 Oct 2013 05:06:44 -0500 From: Roger Quadros To: , Subject: [PATCH v2 1/6] ARM: OMAP5: hwmod data: Add USB Host and TLL modules Date: Tue, 8 Oct 2013 13:06:34 +0300 Message-ID: <1381226799-29158-2-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1381226799-29158-1-git-send-email-rogerq@ti.com> References: <1381226799-29158-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131008_060708_443403_E57EF10A X-CRM114-Status: GOOD ( 17.21 ) X-Spam-Score: -7.2 (-------) Cc: devicetree@vger.kernel.org, Paul Walmsley , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, balbi@ti.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Roger Quadros X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add hwmod data for High Speed USB host and TLL modules CC: Paul Walmsley Signed-off-by: Roger Quadros --- arch/arm/mach-omap2/omap_hwmod_54xx_data.c | 135 ++++++++++++++++++++++++++++ 1 files changed, 135 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod_54xx_data.c b/arch/arm/mach-omap2/omap_hwmod_54xx_data.c index 1a21a81..1dd2c20 100644 --- a/arch/arm/mach-omap2/omap_hwmod_54xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_54xx_data.c @@ -1501,6 +1501,123 @@ static struct omap_hwmod omap54xx_uart6_hwmod = { }; /* + * 'usb_host_hs' class + * high-speed multi-port usb host controller + */ + +static struct omap_hwmod_class_sysconfig omap54xx_usb_host_hs_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x0010, + .sysc_flags = (SYSC_HAS_MIDLEMODE | SYSC_HAS_RESET_STATUS | + SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET), + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART | + SIDLE_SMART_WKUP | MSTANDBY_FORCE | MSTANDBY_NO | + MSTANDBY_SMART | MSTANDBY_SMART_WKUP), + .sysc_fields = &omap_hwmod_sysc_type2, +}; + +static struct omap_hwmod_class omap54xx_usb_host_hs_hwmod_class = { + .name = "usb_host_hs", + .sysc = &omap54xx_usb_host_hs_sysc, +}; + +static struct omap_hwmod omap54xx_usb_host_hs_hwmod = { + .name = "usb_host_hs", + .class = &omap54xx_usb_host_hs_hwmod_class, + .clkdm_name = "l3init_clkdm", + /* + * 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, + .main_clk = "l3init_60m_fclk", + .prcm = { + .omap4 = { + .clkctrl_offs = OMAP54XX_CM_L3INIT_USB_HOST_HS_CLKCTRL_OFFSET, + .context_offs = OMAP54XX_RM_L3INIT_USB_HOST_HS_CONTEXT_OFFSET, + .modulemode = MODULEMODE_SWCTRL, + }, + }, +}; + +/* + * 'usb_tll_hs' class + * usb_tll_hs module is the adapter on the usb_host_hs ports + */ + +static struct omap_hwmod_class_sysconfig omap54xx_usb_tll_hs_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x0010, + .syss_offs = 0x0014, + .sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY | + SYSC_HAS_ENAWAKEUP | SYSC_HAS_SIDLEMODE | + SYSC_HAS_SOFTRESET | SYSS_HAS_RESET_STATUS), + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART), + .sysc_fields = &omap_hwmod_sysc_type1, +}; + +static struct omap_hwmod_class omap54xx_usb_tll_hs_hwmod_class = { + .name = "usb_tll_hs", + .sysc = &omap54xx_usb_tll_hs_sysc, +}; + +static struct omap_hwmod omap54xx_usb_tll_hs_hwmod = { + .name = "usb_tll_hs", + .class = &omap54xx_usb_tll_hs_hwmod_class, + .clkdm_name = "l3init_clkdm", + .main_clk = "l4_root_clk_div", + .prcm = { + .omap4 = { + .clkctrl_offs = OMAP54XX_CM_L3INIT_USB_TLL_HS_CLKCTRL_OFFSET, + .context_offs = OMAP54XX_RM_L3INIT_USB_TLL_HS_CONTEXT_OFFSET, + .modulemode = MODULEMODE_HWCTRL, + }, + }, +}; + +/* * 'usb_otg_ss' class * 2.0 super speed (usb_otg_ss) controller */ @@ -2140,6 +2257,22 @@ static struct omap_hwmod_ocp_if omap54xx_l4_per__uart6 = { .user = OCP_USER_MPU | OCP_USER_SDMA, }; +/* l4_cfg -> usb_host_hs */ +static struct omap_hwmod_ocp_if omap54xx_l4_cfg__usb_host_hs = { + .master = &omap54xx_l4_cfg_hwmod, + .slave = &omap54xx_usb_host_hs_hwmod, + .clk = "l3_iclk_div", + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* l4_cfg -> usb_tll_hs */ +static struct omap_hwmod_ocp_if omap54xx_l4_cfg__usb_tll_hs = { + .master = &omap54xx_l4_cfg_hwmod, + .slave = &omap54xx_usb_tll_hs_hwmod, + .clk = "l4_root_clk_div", + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + /* l4_cfg -> usb_otg_ss */ static struct omap_hwmod_ocp_if omap54xx_l4_cfg__usb_otg_ss = { .master = &omap54xx_l4_cfg_hwmod, @@ -2225,6 +2358,8 @@ static struct omap_hwmod_ocp_if *omap54xx_hwmod_ocp_ifs[] __initdata = { &omap54xx_l4_per__uart4, &omap54xx_l4_per__uart5, &omap54xx_l4_per__uart6, + &omap54xx_l4_cfg__usb_host_hs, + &omap54xx_l4_cfg__usb_tll_hs, &omap54xx_l4_cfg__usb_otg_ss, &omap54xx_l4_wkup__wd_timer2, NULL,