Am 24.10.2019 um 20:23 schrieb Simon Goldschmidt:
From: Simon Goldschmidt simon.k.r.goldschmidt@gmail.com
Support loading clk speed via DM instead of requiring ad-hoc code.
Signed-off-by: Simon Goldschmidt simon.k.r.goldschmidt@gmail.com Signed-off-by: Simon Goldschmidt goldsimon@gmx.de
That gmx adress somehow slipped in after cloning u-boot-spi. Can you remove it when applying or should I resend?
Regards, Simon
Changes in v2:
check return value of clk_get_rate for error
drivers/spi/cadence_qspi.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c index e2e54cd277..60af99a16a 100644 --- a/drivers/spi/cadence_qspi.c +++ b/drivers/spi/cadence_qspi.c @@ -5,6 +5,7 @@ */
#include <common.h> +#include <clk.h> #include <dm.h> #include <fdtdec.h> #include <malloc.h> @@ -22,12 +23,29 @@ static int cadence_spi_write_speed(struct udevice *bus, uint hz) { struct cadence_spi_platdata *plat = bus->platdata; struct cadence_spi_priv *priv = dev_get_priv(bus);
- unsigned int ref_clk_hz;
- struct clk clk;
- int ret;
- ret = clk_get_by_index(bus, 0, &clk);
- if (ret) {
+#ifdef CONFIG_CQSPI_REF_CLK
ref_clk_hz = CONFIG_CQSPI_REF_CLK;+#else
return ret;+#endif
} else {
ref_clk_hz = clk_get_rate(&clk);clk_free(&clk);if (IS_ERR_VALUE(ref_clk_hz))return ref_clk_hz;}
cadence_qspi_apb_config_baudrate_div(priv->regbase,
CONFIG_CQSPI_REF_CLK, hz);
ref_clk_hz, hz);/* Reconfigure delay timing if speed is changed. */
- cadence_qspi_apb_delay(priv->regbase, CONFIG_CQSPI_REF_CLK, hz,
- cadence_qspi_apb_delay(priv->regbase, ref_clk_hz, hz, plat->tshsl_ns, plat->tsd2d_ns, plat->tchsh_ns, plat->tslch_ns);