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PM / devfreq: rockchip-dfi: Fix calculation error in RK3528

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In RK3528, COUNT_NUM (total) needs *2 because it is in DFI clock cycle.

Signed-off-by: Wesley Yao <wesley.yao@rock-chips.com>
Change-Id: I72fb4e06d992772c69aac76b79a0532c5f7ffff7
This commit is contained in:
Wesley Yao
2023-06-06 14:58:41 +08:00
committed by Tao Huang
parent c623837a75
commit 0d6f8370c8
1 changed files with 7 additions and 1 deletions
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8
drivers/devfreq/event/rockchip-dfi.c
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@ -115,6 +115,7 @@ struct rockchip_dfi {
struct regmap *regmap_pmugrf;
struct clk *clk;
u32 dram_type;
u32 count_rate;
/*
* available mask, 1: available, 0: not available
* each bit represent a channel
@ -381,16 +382,20 @@ static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev)
u32 tmp, max = 0;
u32 i, busier_ch = 0;
void __iomem *dfi_regs = info->regs;
u32 count_rate = 1;
rockchip_dfi_stop_hardware_counter(edev);
if (info->count_rate)
count_rate = info->count_rate;
/* Find out which channel is busier */
for (i = 0; i < MAX_DMC_NUM_CH; i++) {
if (!(info->ch_msk & BIT(i)))
continue;
info->ch_usage[i].total = readl_relaxed(dfi_regs +
DDRMON_CH0_COUNT_NUM + i * 20);
DDRMON_CH0_COUNT_NUM + i * 20) * count_rate;
/* LPDDR4 and LPDDR4X BL = 16,other DDR type BL = 8 */
tmp = readl_relaxed(dfi_regs +
@ -669,6 +674,7 @@ static __maybe_unused __init int rk3528_dfi_init(struct platform_device *pdev,
data->dram_type = READ_DRAMTYPE_INFO_V3(val_18, val_19);
else
data->dram_type = READ_DRAMTYPE_INFO(val_18);
data->count_rate = 2;
data->ch_msk = 1;
data->clk = NULL;