A lot of Xilinx drivers are checking -ENOSYS which means that clock driver doesn't have enable function. Remove this checking from drivers and create dummy enable function as was done for clk_fixed_rate driver by commit 6bf6d81c1112 ("clk: fixed_rate: add dummy enable() function").
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
Changes in v2: - New patch is series
drivers/clk/clk_zynq.c | 11 +++++++++++ drivers/mmc/zynq_sdhci.c | 2 +- drivers/net/zynq_gem.c | 4 ++-- drivers/serial/serial_zynq.c | 2 +- drivers/spi/zynq_qspi.c | 2 +- drivers/spi/zynq_spi.c | 2 +- drivers/spi/zynqmp_gqspi.c | 2 +- drivers/watchdog/xilinx_wwdt.c | 3 +-- 8 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/drivers/clk/clk_zynq.c b/drivers/clk/clk_zynq.c index bf32d8317ab2..03a2f1991a08 100644 --- a/drivers/clk/clk_zynq.c +++ b/drivers/clk/clk_zynq.c @@ -422,6 +422,16 @@ static ulong zynq_clk_set_rate(struct clk *clk, ulong rate) return -ENXIO; } } + +static int dummy_enable(struct clk *clk) +{ + /* + * Add implementation but by default all clocks are enabled + * after power up which is only one supported case now. + */ + return 0; +} + #else static ulong zynq_clk_get_rate(struct clk *clk) { @@ -448,6 +458,7 @@ static struct clk_ops zynq_clk_ops = { .get_rate = zynq_clk_get_rate, #ifndef CONFIG_SPL_BUILD .set_rate = zynq_clk_set_rate, + .enable = dummy_enable, #endif };
diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index d9ad0ff199d7..b79c4021b6a5 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -577,7 +577,7 @@ static int arasan_sdhci_probe(struct udevice *dev) debug("%s: CLK %ld\n", __func__, clock);
ret = clk_enable(&clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(dev, "failed to enable clock\n"); return ret; } diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c index 5cb02bb3a7d2..22237de66bc7 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -477,13 +477,13 @@ static int zynq_gem_init(struct udevice *dev) }
ret = clk_set_rate(&priv->clk, clk_rate); - if (IS_ERR_VALUE(ret) && ret != (unsigned long)-ENOSYS) { + if (IS_ERR_VALUE(ret)) { dev_err(dev, "failed to set tx clock rate\n"); return ret; }
ret = clk_enable(&priv->clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(dev, "failed to enable tx clock\n"); return ret; } diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c index 2883e2466f8b..799d5240473c 100644 --- a/drivers/serial/serial_zynq.c +++ b/drivers/serial/serial_zynq.c @@ -127,7 +127,7 @@ static int zynq_serial_setbrg(struct udevice *dev, int baudrate) debug("%s: CLK %ld\n", __func__, clock);
ret = clk_enable(&clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(dev, "failed to enable clock\n"); return ret; } diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c index 845f2d2f5f41..29dbbf555776 100644 --- a/drivers/spi/zynq_qspi.c +++ b/drivers/spi/zynq_qspi.c @@ -193,7 +193,7 @@ static int zynq_qspi_probe(struct udevice *bus) }
ret = clk_enable(&clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(bus, "failed to enable clock\n"); return ret; } diff --git a/drivers/spi/zynq_spi.c b/drivers/spi/zynq_spi.c index 2971e55f41b1..650d4d71d925 100644 --- a/drivers/spi/zynq_spi.c +++ b/drivers/spi/zynq_spi.c @@ -143,7 +143,7 @@ static int zynq_spi_probe(struct udevice *bus) }
ret = clk_enable(&clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(bus, "failed to enable clock\n"); return ret; } diff --git a/drivers/spi/zynqmp_gqspi.c b/drivers/spi/zynqmp_gqspi.c index c7db43a09a52..bd25511aae6a 100644 --- a/drivers/spi/zynqmp_gqspi.c +++ b/drivers/spi/zynqmp_gqspi.c @@ -373,7 +373,7 @@ static int zynqmp_qspi_probe(struct udevice *bus) debug("%s: CLK %ld\n", __func__, clock);
ret = clk_enable(&clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(bus, "failed to enable clock\n"); return ret; } diff --git a/drivers/watchdog/xilinx_wwdt.c b/drivers/watchdog/xilinx_wwdt.c index 9137d87697d4..11b30ae85df0 100644 --- a/drivers/watchdog/xilinx_wwdt.c +++ b/drivers/watchdog/xilinx_wwdt.c @@ -90,9 +90,8 @@ static int xlnx_wwdt_start(struct udevice *dev, u64 timeout, ulong flags) /* Calculate timeout count */ count = timeout * clock_f;
- /* clk_enable will return -ENOSYS when it is not implemented */ ret = clk_enable(&wdt->clk); - if (ret && ret != -ENOSYS) { + if (ret) { dev_err(dev, "failed to enable clock\n"); return ret; }