5 files changed, 67 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/clock3xxx_data.c b/arch/arm/mach-omap2/clock3xxx_data.c
index 5d0064a4fb5a..4e1b1a2f0537 100644
--- a/arch/arm/mach-omap2/clock3xxx_data.c
+++ b/arch/arm/mach-omap2/clock3xxx_data.c
@@ -2480,6 +2480,16 @@ static struct clk uart4_fck = {
         .recalc         = &followparent_recalc,
 };
 
+static struct clk uart4_fck_am35xx = {
+        .name           = "uart4_fck",
+        .ops            = &clkops_omap2_dflt_wait,
+        .parent         = &per_48m_fck,
+        .enable_reg     = OMAP_CM_REGADDR(CORE_MOD, CM_FCLKEN1),
+        .enable_bit     = OMAP3430_EN_UART4_SHIFT,
+        .clkdm_name     = "core_l4_clkdm",
+        .recalc         = &followparent_recalc,
+};
+
 static struct clk gpt2_fck = {
         .name           = "gpt2_fck",
         .ops            = &clkops_omap2_dflt_wait,
@@ -3403,6 +3413,7 @@ static struct omap_clk omap3xxx_clks[] = {
         CLK(NULL,       "per_48m_fck",  &per_48m_fck,   CK_3XXX),
         CLK(NULL,       "uart3_fck",    &uart3_fck,     CK_3XXX),
         CLK(NULL,       "uart4_fck",    &uart4_fck,     CK_36XX),
+        CLK(NULL,       "uart4_fck",    &uart4_fck_am35xx, CK_3505 | CK_3517),
         CLK(NULL,       "gpt2_fck",     &gpt2_fck,      CK_3XXX),
         CLK(NULL,       "gpt3_fck",     &gpt3_fck,      CK_3XXX),
         CLK(NULL,       "gpt4_fck",     &gpt4_fck,      CK_3XXX),
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 126cb49c0de7..3be90feca77c 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -164,6 +164,7 @@ static struct omap_hwmod omap3xxx_uart1_hwmod;
 static struct omap_hwmod omap3xxx_uart2_hwmod;
 static struct omap_hwmod omap3xxx_uart3_hwmod;
 static struct omap_hwmod omap3xxx_uart4_hwmod;
+static struct omap_hwmod am35xx_uart4_hwmod;
 static struct omap_hwmod omap3xxx_usbhsotg_hwmod;
 
 /* l3_core -> usbhsotg interface */
@@ -299,6 +300,23 @@ static struct omap_hwmod_ocp_if omap3_l4_per__uart4 = {
         .user           = OCP_USER_MPU | OCP_USER_SDMA,
 };
 
+/* AM35xx: L4 CORE -> UART4 interface */
+static struct omap_hwmod_addr_space am35xx_uart4_addr_space[] = {
+        {
+                .pa_start       = OMAP3_UART4_AM35XX_BASE,
+                .pa_end         = OMAP3_UART4_AM35XX_BASE + SZ_1K - 1,
+                .flags          = ADDR_MAP_ON_INIT | ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if am35xx_l4_core__uart4 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &am35xx_uart4_hwmod,
+        .clk            = "uart4_ick",
+        .addr           = am35xx_uart4_addr_space,
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
 /* L4 CORE -> I2C1 interface */
 static struct omap_hwmod_ocp_if omap3_l4_core__i2c1 = {
         .master         = &omap3xxx_l4_core_hwmod,
@@ -1309,6 +1327,39 @@ static struct omap_hwmod omap3xxx_uart4_hwmod = {
         .class          = &omap2_uart_class,
 };
 
+static struct omap_hwmod_irq_info am35xx_uart4_mpu_irqs[] = {
+        { .irq = INT_35XX_UART4_IRQ, },
+};
+
+static struct omap_hwmod_dma_info am35xx_uart4_sdma_reqs[] = {
+        { .name = "rx", .dma_req = AM35XX_DMA_UART4_RX, },
+        { .name = "tx", .dma_req = AM35XX_DMA_UART4_TX, },
+};
+
+static struct omap_hwmod_ocp_if *am35xx_uart4_slaves[] = {
+        &am35xx_l4_core__uart4,
+};
+
+static struct omap_hwmod am35xx_uart4_hwmod = {
+        .name           = "uart4",
+        .mpu_irqs       = am35xx_uart4_mpu_irqs,
+        .sdma_reqs      = am35xx_uart4_sdma_reqs,
+        .main_clk       = "uart4_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_UART4_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_EN_UART4_SHIFT,
+                },
+        },
+        .slaves         = am35xx_uart4_slaves,
+        .slaves_cnt     = ARRAY_SIZE(am35xx_uart4_slaves),
+        .class          = &omap2_uart_class,
+};
+
+
 static struct omap_hwmod_class i2c_class = {
         .name   = "i2c",
         .sysc   = &i2c_sysc,
@@ -3287,6 +3338,7 @@ static __initdata struct omap_hwmod *omap36xx_hwmods[] = {
 static __initdata struct omap_hwmod *am35xx_hwmods[] = {
         &omap3xxx_dss_core_hwmod, /* XXX ??? */
         &am35xx_usbhsotg_hwmod,
+        &am35xx_uart4_hwmod,
         NULL
 };
 
diff --git a/arch/arm/mach-omap2/prcm-common.h b/arch/arm/mach-omap2/prcm-common.h
index 0363dcb0ef93..da2d80f5fcbd 100644
--- a/arch/arm/mach-omap2/prcm-common.h
+++ b/arch/arm/mach-omap2/prcm-common.h
@@ -201,6 +201,8 @@
 #define OMAP3430_EN_MMC2_SHIFT                          25
 #define OMAP3430_EN_MMC1_MASK                           (1 << 24)
 #define OMAP3430_EN_MMC1_SHIFT                          24
+#define OMAP3430_EN_UART4_MASK                          (1 << 23)
+#define OMAP3430_EN_UART4_SHIFT                         23
 #define OMAP3430_EN_MCSPI4_MASK                         (1 << 21)
 #define OMAP3430_EN_MCSPI4_SHIFT                        21
 #define OMAP3430_EN_MCSPI3_MASK                         (1 << 20)
diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index 30e10719b774..6e5d3a0cb9d5 100644
--- a/arch/arm/plat-omap/include/plat/irqs.h
+++ b/arch/arm/plat-omap/include/plat/irqs.h
@@ -357,7 +357,7 @@
 #define INT_35XX_EMAC_C0_TX_PULSE_IRQ   69
 #define INT_35XX_EMAC_C0_MISC_PULSE_IRQ 70
 #define INT_35XX_USBOTG_IRQ             71
-#define INT_35XX_UART4                  84
+#define INT_35XX_UART4_IRQ              84
 #define INT_35XX_CCDC_VD0_IRQ           88
 #define INT_35XX_CCDC_VD1_IRQ           92
 #define INT_35XX_CCDC_VD2_IRQ           93
diff --git a/arch/arm/plat-omap/include/plat/serial.h b/arch/arm/plat-omap/include/plat/serial.h
index 1ab9fd6abe6d..865a2ba7ffa8 100644
--- a/arch/arm/plat-omap/include/plat/serial.h
+++ b/arch/arm/plat-omap/include/plat/serial.h
@@ -44,6 +44,7 @@
 #define OMAP3_UART2_BASE        OMAP2_UART2_BASE
 #define OMAP3_UART3_BASE        0x49020000
 #define OMAP3_UART4_BASE        0x49042000      /* Only on 36xx */
+#define OMAP3_UART4_AM35XX_BASE 0x4809E000      /* Only on AM35xx */
 
 /* OMAP4 serial ports */
 #define OMAP4_UART1_BASE        OMAP2_UART1_BASE