sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
PATCH 1/1 sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
From: Magnus Damm <[email protected]>
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 <[email protected]>
---
arch/sh/boards/mach-ecovec24/setup.c | 5 +++++ arch/sh/kernel/cpu/sh4a/clock-sh7724.c | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-)
arch/sh/boards/mach-ecovec24/setup.c +5 -0
@@ -1121,6 +1121,11 @@ static int __init arch_setup(void)gpio_request (GPIO_FN_INTC_IRQ1 ,NULL );gpio_direction_input (GPIO_FN_INTC_IRQ1 ); +/* set VPU clock to 166 MHz */ + clk =clk_get (NULL ,"vpu_clk" ); +clk_set_rate (clk,clk_round_rate (clk,166000000 )); +clk_put (clk); +/* enable I2C device */ i2c_register_board_info (0 , i2c0_devices,ARRAY_SIZE (i2c0_devices));
arch/sh/kernel/cpu/sh4a/clock-sh7724.c +1 -1
@@ -159,7 +159,7 @@ struct clk div4_clks[DIV4_NR] = { [DIV4_SH] = DIV4("shyway_clk", FRQCRA, 12, 0x2f7c, CLK_ENABLE_ON_INIT), [DIV4_B] = DIV4("bus_clk", FRQCRA, 8, 0x2f7c, CLK_ENABLE_ON_INIT), [DIV4_P] = DIV4("peripheral_clk", FRQCRA, 0, 0x2f7c, 0), - [DIV4_M1] = DIV4("vpu_clk", FRQCRB, 4, 0x2f7c, 0), + [DIV4_M1] = DIV4("vpu_clk", FRQCRB, 4, 0x2f7c, CLK_ENABLE_ON_INIT), };struct clk div6_clks[] = {