From f51f270a70bca1b8974980fa79547496df082054 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Tue, 5 Sep 2017 13:05:28 +0800 Subject: [PATCH] core: arm: imx: get mmdc type Add get mmdc type support, this will be used when configuring ddr into self refresh for low power feature. Signed-off-by: Peng Fan Acked-by: Jens Wiklander Acked-by: Etienne Carriere --- core/arch/arm/plat-imx/mmdc.c | 64 +++++++++++++++++++++++++++++++++++ core/arch/arm/plat-imx/mmdc.h | 49 +++++++++++++++++++++++++++ core/arch/arm/plat-imx/sub.mk | 2 ++ 3 files changed, 115 insertions(+) create mode 100644 core/arch/arm/plat-imx/mmdc.c create mode 100644 core/arch/arm/plat-imx/mmdc.h diff --git a/core/arch/arm/plat-imx/mmdc.c b/core/arch/arm/plat-imx/mmdc.c new file mode 100644 index 00000000000..f597f531833 --- /dev/null +++ b/core/arch/arm/plat-imx/mmdc.c @@ -0,0 +1,64 @@ +/* + * Copyright 2017 NXP + * + * Peng Fan + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int imx_get_ddr_type(void) +{ + uint32_t val, off; + bool is_mx7 = soc_is_imx7ds(); + vaddr_t mmdc_base = core_mmu_get_va(MMDC_P0_BASE, MEM_AREA_IO_SEC); + + if (is_mx7) + off = DDRC_MSTR; + else + off = MMDC_MDMISC; + + val = read32(mmdc_base + off); + + if (is_mx7) { + if (val & MSTR_DDR3) + return IMX_DDR_TYPE_DDR3; + else if (val & MSTR_LPDDR2) + return IMX_DDR_TYPE_LPDDR2; + else if (val & MSTR_LPDDR3) + return IMX_DDR_TYPE_LPDDR3; + else + return -1; + } + + return (val & MDMISC_DDR_TYPE_MASK) >> MDMISC_DDR_TYPE_SHIFT; +} diff --git a/core/arch/arm/plat-imx/mmdc.h b/core/arch/arm/plat-imx/mmdc.h new file mode 100644 index 00000000000..b2c05ef734e --- /dev/null +++ b/core/arch/arm/plat-imx/mmdc.h @@ -0,0 +1,49 @@ +/* + * Copyright 2017 NXP + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __IMX_MMDC_H +#define __IMX_MMDC_H + +#define IMX_DDR_TYPE_DDR3 0 +#define IMX_DDR_TYPE_LPDDR2 1 +#define IMX_DDR_TYPE_LPDDR3 2 +/* For i.MX6SLL */ +#define IMX_MMDC_DDR_TYPE_LPDDR3 3 + +/* i.MX6 */ +#define MMDC_MDMISC 0x18 +#define MDMISC_DDR_TYPE_MASK GENMASK_32(4, 3) +#define MDMISC_DDR_TYPE_SHIFT 0x3 + +/* i.MX7 */ +#define DDRC_MSTR 0x0 +#define MSTR_DDR3 BIT(0) +#define MSTR_LPDDR2 BIT(2) +#define MSTR_LPDDR3 BIT(3) + +int imx_get_ddr_type(void); + +#endif diff --git a/core/arch/arm/plat-imx/sub.mk b/core/arch/arm/plat-imx/sub.mk index 661b2aab7ff..17fda6adc28 100644 --- a/core/arch/arm/plat-imx/sub.mk +++ b/core/arch/arm/plat-imx/sub.mk @@ -1,6 +1,8 @@ global-incdirs-y += . srcs-y += main.c imx-common.c +srcs-$(CFG_MX6)$(CFG_MX7) += mmdc.c + srcs-$(CFG_PL310) += imx_pl310.c srcs-$(CFG_PSCI_ARM32) += pm/psci.c pm/gpcv2.c cflags-pm/psci.c-y += -Wno-suggest-attribute=noreturn