From: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com
There is no need of read modify write for tapdelay settings ans hence remove the read operations while setting tapdelays. Also, correct tapdelay value settings at 40MHZ by modifying the if check to <= instead of <.
Signed-off-by: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com ---
drivers/spi/zynqmp_gqspi.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-)
diff --git a/drivers/spi/zynqmp_gqspi.c b/drivers/spi/zynqmp_gqspi.c index ae7b70aa57..136c20f09e 100644 --- a/drivers/spi/zynqmp_gqspi.c +++ b/drivers/spi/zynqmp_gqspi.c @@ -282,24 +282,19 @@ void zynqmp_qspi_set_tapdelay(struct udevice *bus, u32 baudrateval) debug("%s, req_hz:%d, clk_rate:%d, baudrateval:%d\n", __func__, reqhz, clk_rate, baudrateval);
- if (reqhz < GQSPI_FREQ_40MHZ) { - zynqmp_mmio_read(IOU_TAPDLY_BYPASS_OFST, &tapdlybypass); - tapdlybypass |= (TAP_DLY_BYPASS_LQSPI_RX_VALUE << - TAP_DLY_BYPASS_LQSPI_RX_SHIFT); + if (reqhz <= GQSPI_FREQ_40MHZ) { + tapdlybypass = TAP_DLY_BYPASS_LQSPI_RX_VALUE << + TAP_DLY_BYPASS_LQSPI_RX_SHIFT; } else if (reqhz <= GQSPI_FREQ_100MHZ) { - zynqmp_mmio_read(IOU_TAPDLY_BYPASS_OFST, &tapdlybypass); - tapdlybypass |= (TAP_DLY_BYPASS_LQSPI_RX_VALUE << - TAP_DLY_BYPASS_LQSPI_RX_SHIFT); - lpbkdlyadj = readl(®s->lpbkdly); - lpbkdlyadj |= (GQSPI_LPBK_DLY_ADJ_LPBK_MASK); - datadlyadj = readl(®s->gqspidlyadj); - datadlyadj |= ((GQSPI_USE_DATA_DLY << GQSPI_USE_DATA_DLY_SHIFT) - | (GQSPI_DATA_DLY_ADJ_VALUE << - GQSPI_DATA_DLY_ADJ_SHIFT)); + tapdlybypass = TAP_DLY_BYPASS_LQSPI_RX_VALUE << + TAP_DLY_BYPASS_LQSPI_RX_SHIFT; + lpbkdlyadj = GQSPI_LPBK_DLY_ADJ_LPBK_MASK; + datadlyadj = (GQSPI_USE_DATA_DLY << GQSPI_USE_DATA_DLY_SHIFT) | + (GQSPI_DATA_DLY_ADJ_VALUE << + GQSPI_DATA_DLY_ADJ_SHIFT); } else if (reqhz <= GQSPI_FREQ_150MHZ) { - lpbkdlyadj = readl(®s->lpbkdly); - lpbkdlyadj |= ((GQSPI_LPBK_DLY_ADJ_LPBK_MASK) | - GQSPI_LPBK_DLY_ADJ_DLY_0); + lpbkdlyadj = GQSPI_LPBK_DLY_ADJ_LPBK_MASK | + GQSPI_LPBK_DLY_ADJ_DLY_0; }
zynqmp_mmio_write(IOU_TAPDLY_BYPASS_OFST, IOU_TAPDLY_BYPASS_MASK, -- 2.17.1
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