From 81ac7e51ccf2984e9c0964a883d6b7e8fe875aad Mon Sep 17 00:00:00 2001 From: Eric Benard Date: Mon, 22 Apr 2013 05:54:59 +0000 Subject: [PATCH] da850: provide davinci_enable_uart0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit this is needed to bring UART0 out of reset but this function currently only exists for dm644x/355/365/646x when da850 (at least am1808 also need it). Signed-off-by: Eric Bénard --- arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c | 8 ++++++++ arch/arm/include/asm/arch-davinci/hardware.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c b/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c index ff2e2e33df..127beb86bc 100644 --- a/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c +++ b/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c @@ -32,6 +32,14 @@ #include #include +void davinci_enable_uart0(void) +{ + lpsc_on(DAVINCI_LPSC_UART0); + + /* Bringup UART0 out of reset */ + REG(UART0_PWREMU_MGMT) = 0x00006001; +} + #if defined(CONFIG_SYS_DA850_PLL_INIT) void da850_waitloop(unsigned long loopcnt) { diff --git a/arch/arm/include/asm/arch-davinci/hardware.h b/arch/arm/include/asm/arch-davinci/hardware.h index 6eed6c95a7..a9017e4683 100644 --- a/arch/arm/include/asm/arch-davinci/hardware.h +++ b/arch/arm/include/asm/arch-davinci/hardware.h @@ -346,6 +346,8 @@ void davinci_errata_workarounds(void); #define PSC_PSC0_MODULE_ID_CNT 16 #define PSC_PSC1_MODULE_ID_CNT 32 +#define UART0_PWREMU_MGMT (0x01c42030) + struct davinci_psc_regs { dv_reg revid; dv_reg rsvd0[71]; -- 2.39.5