This patch lets the spi driver to use clock provided by the clk driver since the new clk-mt7628 driver provides accurate sys clock frequency.
Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- v2: newly added --- drivers/spi/mt7621_spi.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/spi/mt7621_spi.c b/drivers/spi/mt7621_spi.c index 107e58f657..b37f859b98 100644 --- a/drivers/spi/mt7621_spi.c +++ b/drivers/spi/mt7621_spi.c @@ -9,6 +9,7 @@ */
#include <common.h> +#include <clk.h> #include <dm.h> #include <spi.h> #include <wait_bit.h> @@ -266,19 +267,24 @@ static int mt7621_spi_xfer(struct udevice *dev, unsigned int bitlen, static int mt7621_spi_probe(struct udevice *dev) { struct mt7621_spi *rs = dev_get_priv(dev); + struct clk clk; + int ret;
rs->base = dev_remap_addr(dev); if (!rs->base) return -EINVAL;
- /* - * Read input clock via DT for now. At some point this should be - * replaced by implementing a clock driver for this SoC and getting - * the SPI frequency via this clock driver. - */ - rs->sys_freq = dev_read_u32_default(dev, "clock-frequency", 0); + ret = clk_get_by_index(dev, 0, &clk); + if (ret < 0) { + printf("Please provide a clock!\n"); + return ret; + } + + clk_enable(&clk); + + rs->sys_freq = clk_get_rate(&clk); if (!rs->sys_freq) { - printf("Please provide clock-frequency!\n"); + printf("Please provide a valid clock!\n"); return -EINVAL; }