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| author | Ashok Reddy Soma <ashok.reddy.soma@amd.com> | 2022-08-25 06:59:01 -0600 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2022-09-13 11:32:48 +0200 |
| commit | f4f1b65cc6b01a787b5efa61bb9be195254d0334 (patch) | |
| tree | 8f03f92ca0fcd974ece72c187561f0840cdbac0d | |
| parent | f7d4cab1b3059089e0bb16bc26849b2aad57fa17 (diff) | |
| download | u-boot-f4f1b65cc6b01a787b5efa61bb9be195254d0334.zip u-boot-f4f1b65cc6b01a787b5efa61bb9be195254d0334.tar.gz u-boot-f4f1b65cc6b01a787b5efa61bb9be195254d0334.tar.bz2 | |
spi: zynqmp_gqspi: Add tap delays for Versal
Add tap delays for Versal platform and re-align the tapdelays code.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20220825125906.11581-2-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
| -rw-r--r-- | drivers/spi/zynqmp_gqspi.c | 60 |
1 files changed, 38 insertions, 22 deletions
diff --git a/drivers/spi/zynqmp_gqspi.c b/drivers/spi/zynqmp_gqspi.c index c772bae..958432c 100644 --- a/drivers/spi/zynqmp_gqspi.c +++ b/drivers/spi/zynqmp_gqspi.c @@ -22,6 +22,7 @@ #include <dm/device_compat.h> #include <linux/bitops.h> #include <linux/err.h> +#include <zynqmp_firmware.h> #define GQSPI_GFIFO_STRT_MODE_MASK BIT(29) #define GQSPI_CONFIG_MODE_EN_MASK (3 << 30) @@ -102,8 +103,10 @@ #define TAP_DLY_BYPASS_LQSPI_RX_VALUE 0x1 #define TAP_DLY_BYPASS_LQSPI_RX_SHIFT 2 #define GQSPI_DATA_DLY_ADJ_OFST 0x000001F8 -#define IOU_TAPDLY_BYPASS_OFST 0xFF180390 +#define IOU_TAPDLY_BYPASS_OFST !IS_ENABLED(CONFIG_ARCH_VERSAL) ? \ + 0xFF180390 : 0xF103003C #define GQSPI_LPBK_DLY_ADJ_LPBK_MASK 0x00000020 +#define GQSPI_FREQ_37_5MHZ 37500000 #define GQSPI_FREQ_40MHZ 40000000 #define GQSPI_FREQ_100MHZ 100000000 #define GQSPI_FREQ_150MHZ 150000000 @@ -297,28 +300,41 @@ 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); - } 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)); - } else if (reqhz <= GQSPI_FREQ_150MHZ) { - lpbkdlyadj = readl(®s->lpbkdly); - lpbkdlyadj |= ((GQSPI_LPBK_DLY_ADJ_LPBK_MASK) | - GQSPI_LPBK_DLY_ADJ_DLY_0); + if (!IS_ENABLED(CONFIG_ARCH_VERSAL)) { + if (reqhz <= GQSPI_FREQ_40MHZ) { + tapdlybypass = TAP_DLY_BYPASS_LQSPI_RX_VALUE << + TAP_DLY_BYPASS_LQSPI_RX_SHIFT; + } else if (reqhz <= GQSPI_FREQ_100MHZ) { + 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 = GQSPI_LPBK_DLY_ADJ_LPBK_MASK | + GQSPI_LPBK_DLY_ADJ_DLY_0; + } + zynqmp_mmio_write(IOU_TAPDLY_BYPASS_OFST, + IOU_TAPDLY_BYPASS_MASK, tapdlybypass); + } else { + if (reqhz <= GQSPI_FREQ_37_5MHZ) { + tapdlybypass = TAP_DLY_BYPASS_LQSPI_RX_VALUE << + TAP_DLY_BYPASS_LQSPI_RX_SHIFT; + } else if (reqhz <= GQSPI_FREQ_100MHZ) { + 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; + } else if (reqhz <= GQSPI_FREQ_150MHZ) { + lpbkdlyadj = GQSPI_LPBK_DLY_ADJ_LPBK_MASK | + (GQSPI_LPBK_DLY_ADJ_DLY_1 << + GQSPI_LPBK_DLY_ADJ_DLY_1_SHIFT); + } + writel(tapdlybypass, IOU_TAPDLY_BYPASS_OFST); } - - zynqmp_mmio_write(IOU_TAPDLY_BYPASS_OFST, IOU_TAPDLY_BYPASS_MASK, - tapdlybypass); writel(lpbkdlyadj, ®s->lpbkdly); writel(datadlyadj, ®s->gqspidlyadj); } |