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mmc: dw_mmc: update actual clock for mmc debugfs
[ Upstream commit ff178981bd
]
Respect the actual clock for mmc debugfs to help better debug
the hardware.
mmc_host mmc0: Bus speed (slot 0) = 135475200Hz (slot req 150000000Hz,
actual 135475200HZ div = 0)
cat /sys/kernel/debug/mmc0/ios
clock: 150000000 Hz
actual clock: 135475200 Hz
vdd: 21 (3.3 ~ 3.4 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 3 (8 bits)
timing spec: 9 (mmc HS200)
signal voltage: 0 (1.80 V)
driver type: 0 (driver type B)
Cc: Xiao Yao <xiaoyao@rock-chips.com>
Cc: Ziyuan <xzy.xu@rock-chips.com>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
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commit
f0b0debbb4
1 changed files with 4 additions and 0 deletions
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@ -1255,6 +1255,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
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if (host->state == STATE_WAITING_CMD11_DONE)
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sdmmc_cmd_bits |= SDMMC_CMD_VOLT_SWITCH;
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slot->mmc->actual_clock = 0;
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if (!clock) {
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mci_writel(host, CLKENA, 0);
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mci_send_cmd(slot, sdmmc_cmd_bits, 0);
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@ -1313,6 +1315,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
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/* keep the last clock value that was requested from core */
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slot->__clk_old = clock;
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slot->mmc->actual_clock = div ? ((host->bus_hz / div) >> 1) :
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host->bus_hz;
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}
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host->current_speed = clock;
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