At the current clock setting, the maximum clock for QSPI is 25 MHz. In my case I use M-RAM which supports up to 100 MHz for QSPI, and with this change the QSPI can be clocked up to 66 MHz.
Signed-off-by: Kwon Tae-young tykwon@m2i.co.kr --- arch/arm/mach-imx/imx8m/clock_imx8mq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c b/arch/arm/mach-imx/imx8m/clock_imx8mq.c index 8fecc60ecb..47b4a8f01f 100644 --- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c +++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c @@ -473,11 +473,11 @@ int set_clk_qspi(void) { /* * set qspi root - * sys pll1 100M + * sys pll1 266M */ clock_enable(CCGR_QSPI, 0); clock_set_target_val(QSPI_CLK_ROOT, CLK_ROOT_ON | - CLK_ROOT_SOURCE_SEL(7)); + CLK_ROOT_SOURCE_SEL(5)); clock_enable(CCGR_QSPI, 1);
return 0;