From 27f362a57d7fedf428a9502ef83ff3a8d80da38b Mon Sep 17 00:00:00 2001 From: Steffen Trumtrar Date: Mon, 12 Jan 2015 10:48:38 +0100 Subject: ARM: socfpga: avoid using external regulator for PLL From Altera U-Boot: FogBugz #210587: Fixing PLL HW configuration issue Signed-off-by: Steffen Trumtrar Signed-off-by: Sascha Hauer --- arch/arm/mach-socfpga/clock-manager.c | 20 +++++++++++++------- arch/arm/mach-socfpga/include/mach/clock-manager.h | 5 +++++ 2 files changed, 18 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-socfpga/clock-manager.c b/arch/arm/mach-socfpga/clock-manager.c index 13ca69b977..dc81301efd 100644 --- a/arch/arm/mach-socfpga/clock-manager.c +++ b/arch/arm/mach-socfpga/clock-manager.c @@ -123,11 +123,14 @@ void socfpga_cm_basic_init(const struct socfpga_cm_config *cfg) * Put all plls VCO registers back to reset value. * Some code might have messed with them. */ - writel(CLKMGR_MAINPLLGRP_VCO_RESET_VALUE, + writel(CLKMGR_MAINPLLGRP_VCO_RESET_VALUE & + ~CLKMGR_MAINPLLGRP_VCO_REGEXTSEL_MASK, cm + CLKMGR_MAINPLLGRP_VCO_ADDRESS); - writel(CLKMGR_PERPLLGRP_VCO_RESET_VALUE, + writel(CLKMGR_PERPLLGRP_VCO_RESET_VALUE & + ~CLKMGR_PERPLLGRP_VCO_REGEXTSEL_MASK, cm + CLKMGR_PERPLLGRP_VCO_ADDRESS); - writel(CLKMGR_SDRPLLGRP_VCO_RESET_VALUE, + writel(CLKMGR_SDRPLLGRP_VCO_RESET_VALUE & + ~CLKMGR_SDRPLLGRP_VCO_REGEXTSEL_MASK, cm + CLKMGR_SDRPLLGRP_VCO_ADDRESS); /* @@ -151,12 +154,15 @@ void socfpga_cm_basic_init(const struct socfpga_cm_config *cfg) * We made sure bgpwr down was assert for 5 us. Now deassert BG PWR DN * with numerator and denominator. */ - writel(cfg->main_vco_base | CLKMGR_MAINPLLGRP_VCO_REGEXTSEL_MASK, + writel(cfg->main_vco_base | CLEAR_BGP_EN_PWRDN, cm + CLKMGR_MAINPLLGRP_VCO_ADDRESS); - writel(cfg->peri_vco_base | CLKMGR_PERPLLGRP_VCO_REGEXTSEL_MASK, + writel(cfg->peri_vco_base | CLEAR_BGP_EN_PWRDN, cm + CLKMGR_PERPLLGRP_VCO_ADDRESS); - writel(cfg->sdram_vco_base | CLKMGR_SDRPLLGRP_VCO_REGEXTSEL_MASK, - cm + CLKMGR_SDRPLLGRP_VCO_ADDRESS); + writel(cfg->sdram_vco_base | + CLKMGR_SDRPLLGRP_VCO_OUTRESET_SET(0) | + CLKMGR_SDRPLLGRP_VCO_OUTRESETALL_SET(0) | + CLEAR_BGP_EN_PWRDN, + cm + CLKMGR_SDRPLLGRP_VCO_ADDRESS); writel(cfg->mpuclk, cm + CLKMGR_MAINPLLGRP_MPUCLK_ADDRESS); writel(cfg->mainclk, cm + CLKMGR_MAINPLLGRP_MAINCLK_ADDRESS); diff --git a/arch/arm/mach-socfpga/include/mach/clock-manager.h b/arch/arm/mach-socfpga/include/mach/clock-manager.h index a2b697561a..b67f256091 100644 --- a/arch/arm/mach-socfpga/include/mach/clock-manager.h +++ b/arch/arm/mach-socfpga/include/mach/clock-manager.h @@ -185,4 +185,9 @@ void socfpga_cm_basic_init(const struct socfpga_cm_config *cfg); #define CLKMGR_SDRPLLGRP_DDRDQCLK_CNT_MASK 0x000001ff #define CLKMGR_SDRPLLGRP_S2FUSER2CLK_CNT_MASK 0x000001ff +#define CLEAR_BGP_EN_PWRDN \ + (CLKMGR_MAINPLLGRP_VCO_PWRDN_SET(0)| \ + CLKMGR_MAINPLLGRP_VCO_EN_SET(0)| \ + CLKMGR_MAINPLLGRP_VCO_BGPWRDN_SET(0)) + #endif /* _CLOCK_MANAGER_H_ */ -- cgit v1.2.3