From: lalakii <[email protected]> Add "DRAM_SUN50I_H616_TRIM_SIZE" option for 1.5gb board.
Signed-off-by: lalakii <[email protected]> --- arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h | 1 + arch/arm/mach-sunxi/Kconfig | 7 +++++++ arch/arm/mach-sunxi/dram_sun50i_h616.c | 11 ++++++++++- 3 files changed, 18 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h index a8fdda124a..2d2526fead 100644 --- a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h +++ b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h @@ -166,6 +166,7 @@ struct dram_config { u8 rows; u8 ranks; u8 bus_full_width; + bool trim_size; }; static inline int ns_to_t(int nanoseconds) diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index fe89aec6b9..255a498557 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -108,6 +108,13 @@ config DRAM_SUN50I_H616_TPR12 default 0x0 help TPR12 value from vendor DRAM settings. + +config DRAM_SUN50I_H616_TRIM_SIZE + bool "H616 DRAM trim size" + help + Due to unknown issue, some H616 based boards may need to trim + size a bit. + endif config SUN6I_PRCM diff --git a/arch/arm/mach-sunxi/dram_sun50i_h616.c b/arch/arm/mach-sunxi/dram_sun50i_h616.c index 37c139e0ee..4598d60a57 100644 --- a/arch/arm/mach-sunxi/dram_sun50i_h616.c +++ b/arch/arm/mach-sunxi/dram_sun50i_h616.c @@ -1349,8 +1349,15 @@ static unsigned long mctl_calc_size(const struct dram_config *config) { u8 width = config->bus_full_width ? 4 : 2; + unsigned long size; + + size = (1ULL << (config->cols + config->rows + 3)) * width * config->ranks; + + if (config->trim_size) + size = (size * 3) / (width == 4 ? 4 : 8); + /* 8 banks */ - return (1ULL << (config->cols + config->rows + 3)) * width * config->ranks; + return size; } static const struct dram_para para = { @@ -1379,6 +1386,8 @@ unsigned long sunxi_dram_init(void) struct sunxi_prcm_reg *const prcm = (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE; struct dram_config config; + if (IS_ENABLED(CONFIG_DRAM_SUN50I_H616_TRIM_SIZE)) + config.trim_size = true; unsigned long size; setbits_le32(&prcm->res_cal_ctrl, BIT(8)); -- 2.44.0
