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| author | Patrice Chotard <patrice.chotard@st.com> | 2017-07-18 09:29:09 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-07-26 11:28:08 -0400 |
| commit | 541cd6e54eb80159d9212e2dda8fdea8c246eea7 (patch) | |
| tree | 0972ec323085b55f59aa601501c370cb39c7aaae /drivers/spi | |
| parent | 27265cee76ee7ee779e2e26549bdedb9d38a56de (diff) | |
| download | u-boot-541cd6e54eb80159d9212e2dda8fdea8c246eea7.zip u-boot-541cd6e54eb80159d9212e2dda8fdea8c246eea7.tar.gz u-boot-541cd6e54eb80159d9212e2dda8fdea8c246eea7.tar.bz2 | |
spi: stm32_qspi: add clk_get_rate() support
Replace proprietary clock_get() by clk_get_rate()
The stm32_qspi is now "generic" and can be used
by other STM32 SoCs.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/stm32_qspi.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/spi/stm32_qspi.c b/drivers/spi/stm32_qspi.c index f0434a4..ef2b64e 100644 --- a/drivers/spi/stm32_qspi.c +++ b/drivers/spi/stm32_qspi.c @@ -165,6 +165,7 @@ struct stm32_qspi_platdata { struct stm32_qspi_priv { struct stm32_qspi_regs *regs; + ulong clock_rate; u32 max_hz; u32 mode; @@ -471,6 +472,13 @@ static int stm32_qspi_probe(struct udevice *bus) dev_err(bus, "failed to enable clock\n"); return ret; } + + priv->clock_rate = clk_get_rate(&clk); + if (priv->clock_rate < 0) { + clk_disable(&clk); + return priv->clock_rate; + } + #endif setbits_le32(&priv->regs->cr, STM32_QSPI_CR_SSHIFT); @@ -536,7 +544,7 @@ static int stm32_qspi_set_speed(struct udevice *bus, uint speed) if (speed > plat->max_hz) speed = plat->max_hz; - u32 qspi_clk = clock_get(CLOCK_AHB); + u32 qspi_clk = priv->clock_rate; u32 prescaler = 255; if (speed > 0) { prescaler = DIV_ROUND_UP(qspi_clk, speed) - 1; |