clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg clock

The sysreg (system register) generates control signals for various blocks
like disp1blk, i2c, mipi, usb etc. However, it gets disabled as an unused
clock at boot-up. This can lead to failures in operation of above blocks,
because they can not be configured properly if this clock is disabled.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
[t.figa: Updated patch description.]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>

diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
index 03cbc0f6fe4aa05492c4b365aa48a8b9a95306ba..e52359cf9b6fe76db63b787717f003454d89e12e 100644 (file)
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -407,7 +407,8 @@ static struct samsung_gate_clock exynos5250_gate_clks[] __initdata = {
        GATE(hsi2c2, "hsi2c2", "aclk66", GATE_IP_PERIC, 30, 0, 0),
        GATE(hsi2c3, "hsi2c3", "aclk66", GATE_IP_PERIC, 31, 0, 0),
        GATE(chipid, "chipid", "aclk66", GATE_IP_PERIS, 0, 0, 0),
-       GATE(sysreg, "sysreg", "aclk66", GATE_IP_PERIS, 1, 0, 0),
+       GATE(sysreg, "sysreg", "aclk66",
+                       GATE_IP_PERIS, 1, CLK_IGNORE_UNUSED, 0),
        GATE(pmu, "pmu", "aclk66", GATE_IP_PERIS, 2, CLK_IGNORE_UNUSED, 0),
        GATE(tzpc0, "tzpc0", "aclk66", GATE_IP_PERIS, 6, 0, 0),
        GATE(tzpc1, "tzpc1", "aclk66", GATE_IP_PERIS, 7, 0, 0),