sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
Update the sh7724 processor code to always enable vpu_clk. On the Ecovec board, set the vpu_clk to 166 Mhz. The 166MHz setting results in a divide-by-6 setup for vpu_clk and improves the VPU performance compared to the power-on-reset/bootloader configuration. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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7be85c6eb4
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2 changed files with 6 additions and 1 deletions
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@ -1121,6 +1121,11 @@ static int __init arch_setup(void)
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gpio_request(GPIO_FN_INTC_IRQ1, NULL);
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gpio_direction_input(GPIO_FN_INTC_IRQ1);
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/* set VPU clock to 166 MHz */
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clk = clk_get(NULL, "vpu_clk");
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clk_set_rate(clk, clk_round_rate(clk, 166000000));
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clk_put(clk);
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/* enable I2C device */
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i2c_register_board_info(0, i2c0_devices,
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ARRAY_SIZE(i2c0_devices));
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@ -159,7 +159,7 @@ struct clk div4_clks[DIV4_NR] = {
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[DIV4_SH] = DIV4("shyway_clk", FRQCRA, 12, 0x2f7c, CLK_ENABLE_ON_INIT),
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[DIV4_B] = DIV4("bus_clk", FRQCRA, 8, 0x2f7c, CLK_ENABLE_ON_INIT),
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[DIV4_P] = DIV4("peripheral_clk", FRQCRA, 0, 0x2f7c, 0),
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[DIV4_M1] = DIV4("vpu_clk", FRQCRB, 4, 0x2f7c, 0),
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[DIV4_M1] = DIV4("vpu_clk", FRQCRB, 4, 0x2f7c, CLK_ENABLE_ON_INIT),
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};
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struct clk div6_clks[] = {
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