[v3,4/6] clk: tegra: Halve SCLK rate on Tegra20
diff mbox series

Message ID 20210302115117.9375-5-digetx@gmail.com
State New, archived
Headers show
Series
  • Couple improvements for Tegra clk driver
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Commit Message

Dmitry Osipenko March 2, 2021, 11:51 a.m. UTC
Higher SCLK rates on Tegra20 require high core voltage. The higher
clock rate may have a positive performance effect only for AHB DMA
transfers and AVP CPU, but both aren't used by upstream kernel at all.
Halve SCLK rate on Tegra20 in order to remove the high core voltage
requirement.

Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/clk/tegra/clk-tegra20.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Patch
diff mbox series

diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c
index 3efc651b42e3..3664593a5ba4 100644
--- a/drivers/clk/tegra/clk-tegra20.c
+++ b/drivers/clk/tegra/clk-tegra20.c
@@ -1021,9 +1021,9 @@  static struct tegra_clk_init_table init_table[] __initdata = {
 	{ TEGRA20_CLK_PLL_P_OUT3, TEGRA20_CLK_CLK_MAX, 72000000, 1 },
 	{ TEGRA20_CLK_PLL_P_OUT4, TEGRA20_CLK_CLK_MAX, 24000000, 1 },
 	{ TEGRA20_CLK_PLL_C, TEGRA20_CLK_CLK_MAX, 600000000, 0 },
-	{ TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 240000000, 0 },
-	{ TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 240000000, 0 },
-	{ TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 240000000, 0 },
+	{ TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 120000000, 0 },
+	{ TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 120000000, 0 },
+	{ TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 120000000, 0 },
 	{ TEGRA20_CLK_PCLK, TEGRA20_CLK_CLK_MAX, 60000000, 0 },
 	{ TEGRA20_CLK_CSITE, TEGRA20_CLK_CLK_MAX, 0, 1 },
 	{ TEGRA20_CLK_CCLK, TEGRA20_CLK_CLK_MAX, 0, 1 },