ENGR00318063-14: ARM: imx6sx: set pll2_bus as the default parent of QSPI clock

We already know that pll2_bus is the best parent of QSPI clock.  Let's
set it up in clock initialization as the default, so that we can save
those implicit parent switching and rate changing calls from clock
framework.

shawn.guo: cherry-pick commit ecef6a715f1a from imx_3.10.y

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

diff --git a/arch/arm/mach-imx/clk-imx6sx.c b/arch/arm/mach-imx/clk-imx6sx.c
index 6a57c7b7fd5abd72a70f64573da2c4d1c3624798..97d426331dfa3a26d55133222e09d0ebe36a745f 100644 (file)
--- a/arch/arm/mach-imx/clk-imx6sx.c
+++ b/arch/arm/mach-imx/clk-imx6sx.c
@@ -296,13 +296,13 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
        clks[IMX6SX_CLK_SSI3_SEL]           = imx_clk_mux("ssi3_sel",         base + 0x1c,  14,     2,      ssi_sels,          ARRAY_SIZE(ssi_sels));
        clks[IMX6SX_CLK_SSI2_SEL]           = imx_clk_mux("ssi2_sel",         base + 0x1c,  12,     2,      ssi_sels,          ARRAY_SIZE(ssi_sels));
        clks[IMX6SX_CLK_SSI1_SEL]           = imx_clk_mux("ssi1_sel",         base + 0x1c,  10,     2,      ssi_sels,          ARRAY_SIZE(ssi_sels));
-       clks[IMX6SX_CLK_QSPI1_SEL]          = imx_clk_mux_flags("qspi1_sel", base + 0x1c,  7, 3, qspi1_sels, ARRAY_SIZE(qspi1_sels), CLK_SET_RATE_PARENT);
+       clks[IMX6SX_CLK_QSPI1_SEL]          = imx_clk_mux("qspi1_sel",        base + 0x1c,  7,      3,      qspi1_sels,        ARRAY_SIZE(qspi1_sels));
        clks[IMX6SX_CLK_PERCLK_SEL]         = imx_clk_mux("perclk_sel",       base + 0x1c,  6,      1,      perclk_sels,       ARRAY_SIZE(perclk_sels));
        clks[IMX6SX_CLK_VID_SEL]            = imx_clk_mux("vid_sel",          base + 0x20,  21,     3,      vid_sels,          ARRAY_SIZE(vid_sels));
        clks[IMX6SX_CLK_ESAI_SEL]           = imx_clk_mux("esai_sel",         base + 0x20,  19,     2,      audio_sels,        ARRAY_SIZE(audio_sels));
        clks[IMX6SX_CLK_CAN_SEL]            = imx_clk_mux("can_sel",          base + 0x20,  8,      2,      can_sels,          ARRAY_SIZE(can_sels));
        clks[IMX6SX_CLK_UART_SEL]           = imx_clk_mux("uart_sel",         base + 0x24,  6,      1,      uart_sels,         ARRAY_SIZE(uart_sels));
-       clks[IMX6SX_CLK_QSPI2_SEL]          = imx_clk_mux_flags("qspi2_sel", base + 0x2c, 15, 3, qspi2_sels, ARRAY_SIZE(qspi2_sels), CLK_SET_RATE_PARENT);
+       clks[IMX6SX_CLK_QSPI2_SEL]          = imx_clk_mux("qspi2_sel",        base + 0x2c,  15,     3,      qspi2_sels,        ARRAY_SIZE(qspi2_sels));
        clks[IMX6SX_CLK_SPDIF_SEL]          = imx_clk_mux("spdif_sel",        base + 0x30,  20,     2,      audio_sels,        ARRAY_SIZE(audio_sels));
        clks[IMX6SX_CLK_AUDIO_SEL]          = imx_clk_mux("audio_sel",        base + 0x30,  7,      2,      audio_sels,        ARRAY_SIZE(audio_sels));
        clks[IMX6SX_CLK_ENET_PRE_SEL]       = imx_clk_mux("enet_pre_sel",     base + 0x34,  15,     3,      enet_pre_sels,     ARRAY_SIZE(enet_pre_sels));
@@ -577,6 +577,10 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
        if (uart_from_osc)
                imx_clk_set_parent(clks[IMX6SX_CLK_UART_SEL], clks[IMX6SX_CLK_OSC]);
 
+       /* pll2_bus is the best parent of QSPI clock */
+       imx_clk_set_parent(clks[IMX6SX_CLK_QSPI1_SEL], clks[IMX6SX_CLK_PLL2_BUS]);
+       imx_clk_set_parent(clks[IMX6SX_CLK_QSPI2_SEL], clks[IMX6SX_CLK_PLL2_BUS]);
+
        /*
         * Enable clocks only after both parent and rate are all initialized
         * as needed