diff options
Diffstat (limited to 'arch/arm/mach-imx/mmdc.c')
| -rw-r--r-- | arch/arm/mach-imx/mmdc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c index 7a9686ad994c..a377f95033ae 100644 --- a/arch/arm/mach-imx/mmdc.c +++ b/arch/arm/mach-imx/mmdc.c @@ -21,6 +21,12 @@ #define BP_MMDC_MAPSR_PSD 0 #define BP_MMDC_MAPSR_PSS 4 +#define MMDC_MDMISC 0x18 +#define BM_MMDC_MDMISC_DDR_TYPE 0x18 +#define BP_MMDC_MDMISC_DDR_TYPE 0x3 + +static int ddr_type; + static int imx_mmdc_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -31,6 +37,12 @@ static int imx_mmdc_probe(struct platform_device *pdev) mmdc_base = of_iomap(np, 0); WARN_ON(!mmdc_base); + reg = mmdc_base + MMDC_MDMISC; + /* Get ddr type */ + val = readl_relaxed(reg); + ddr_type = (val & BM_MMDC_MDMISC_DDR_TYPE) >> + BP_MMDC_MDMISC_DDR_TYPE; + reg = mmdc_base + MMDC_MAPSR; /* Enable automatic power saving */ @@ -51,6 +63,11 @@ static int imx_mmdc_probe(struct platform_device *pdev) return 0; } +int imx_mmdc_get_ddr_type(void) +{ + return ddr_type; +} + static struct of_device_id imx_mmdc_dt_ids[] = { { .compatible = "fsl,imx6q-mmdc", }, { /* sentinel */ } @@ -59,7 +76,6 @@ static struct of_device_id imx_mmdc_dt_ids[] = { static struct platform_driver imx_mmdc_driver = { .driver = { .name = "imx-mmdc", - .owner = THIS_MODULE, .of_match_table = imx_mmdc_dt_ids, }, .probe = imx_mmdc_probe, |