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clk: samsung: exynos5420: Avoid __clk_lookup() calls when enabling clocks 

This patch adds a clk ID to the mout_sw_aclk_g3d clk definition so related
clk pointer gets cached in the driver's private data and can be used
later instead of a __clk_lookup() call.

With that we have all clocks used in the clk_prepare_enable() calls in the
clk provider init callback cached in clk_data.hws[] and we can reference
the clk pointers directly rather than using __clk_lookup() with global names.

Link: https://lore.kernel.org/r/20200811151251.31613-2-s.nawrocki@samsung.com
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
This commit is contained in:
Sylwester Nawrocki 2020-08-11 17:12:51 +02:00
parent 3f1cc53b5f
commit 8b066520ff
1 changed files with 6 additions and 4 deletions
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10
drivers/clk/samsung/clk-exynos5420.c
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@ -712,8 +712,8 @@ static const struct samsung_mux_clock exynos5x_mux_clks[] __initconst = {
SRC_TOP12, 8, 1),
MUX(0, "mout_sw_aclk266_g2d", mout_sw_aclk266_g2d_p,
SRC_TOP12, 12, 1),
MUX_F(0, "mout_sw_aclk_g3d", mout_sw_aclk_g3d_p, SRC_TOP12, 16, 1,
CLK_SET_RATE_PARENT, 0),
MUX_F(CLK_MOUT_SW_ACLK_G3D, "mout_sw_aclk_g3d", mout_sw_aclk_g3d_p,
SRC_TOP12, 16, 1, CLK_SET_RATE_PARENT, 0),
MUX(0, "mout_sw_aclk300_jpeg", mout_sw_aclk300_jpeg_p,
SRC_TOP12, 20, 1),
MUX(CLK_MOUT_SW_ACLK300, "mout_sw_aclk300_disp1",
@ -1560,6 +1560,7 @@ static void __init exynos5x_clk_init(struct device_node *np,
enum exynos5x_soc soc)
{
struct samsung_clk_provider *ctx;
struct clk_hw **hws;
if (np) {
reg_base = of_iomap(np, 0);
@ -1649,17 +1650,18 @@ static void __init exynos5x_clk_init(struct device_node *np,
exynos5x_subcmus);
}
hws = ctx->clk_data.hws;
/*
* Keep top part of G3D clock path enabled permanently to ensure
* that the internal busses get their clock regardless of the
* main G3D clock enablement status.
*/
clk_prepare_enable(__clk_lookup("mout_sw_aclk_g3d"));
clk_prepare_enable(hws[CLK_MOUT_SW_ACLK_G3D]->clk);
/*
* Keep top BPLL mux enabled permanently to ensure that DRAM operates
* properly.
*/
clk_prepare_enable(__clk_lookup("mout_bpll"));
clk_prepare_enable(hws[CLK_MOUT_BPLL]->clk);
samsung_clk_of_add_provider(np, ctx);
}