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SubjectRe: [PATCH 2/2] clk: stm32: Add DSI clock for STM32F469 Board
On Thu, Jan 18, 2018 at 03:49:40PM +0100, gabriel.fernandez@st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>
> This patch adds DSI clock for STM32F469 board
>
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> ---
> drivers/clk/clk-stm32f4.c | 11 ++++++++++-
> include/dt-bindings/clock/stm32fx-clock.h | 3 ++-
> 2 files changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
> index da44f8d..3c28798 100644
> --- a/drivers/clk/clk-stm32f4.c
> +++ b/drivers/clk/clk-stm32f4.c
> @@ -521,7 +521,7 @@ struct stm32f4_pll_data {
> };
>
> static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = {
> - { PLL, 50, { "pll", "pll-q", NULL } },
> + { PLL, 50, { "pll", "pll-q", "pll-r" } },
> { PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },
> { PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },
> };
> @@ -1047,6 +1047,8 @@ static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name,
> "no-clock", "lse", "lsi", "hse-rtc"
> };
>
> +static const char *dsi_parent[2] = { NULL, "pll-r" };
> +
> static const char *lcd_parent[1] = { "pllsai-r-div" };
>
> static const char *i2s_parents[2] = { "plli2s-r", NULL };
> @@ -1156,6 +1158,12 @@ struct stm32f4_clk_data {
> NO_GATE, 0,
> 0
> },
> + {
> + CLK_F469_DSI, "dsi", dsi_parent, ARRAY_SIZE(dsi_parent),
> + STM32F4_RCC_DCKCFGR, 29, 1,
> + STM32F4_RCC_APB2ENR, 27,
> + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT
> + },
> };
>
> static const struct stm32_aux_clk stm32f746_aux_clk[] = {
> @@ -1450,6 +1458,7 @@ static void __init stm32f4_rcc_init(struct device_node *np)
> stm32f4_gate_map = data->gates_map;
>
> hse_clk = of_clk_get_parent_name(np, 0);
> + dsi_parent[0] = hse_clk;
>
> i2s_in_clk = of_clk_get_parent_name(np, 1);
>
> diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h
> index 4d523b0..58d8b51 100644
> --- a/include/dt-bindings/clock/stm32fx-clock.h
> +++ b/include/dt-bindings/clock/stm32fx-clock.h
> @@ -35,8 +35,9 @@
> #define CLK_SAIQ_PDIV 13
> #define CLK_HSI 14
> #define CLK_SYSCLK 15
> +#define CLK_F469_DSI 16
>
> -#define END_PRIMARY_CLK 16
> +#define END_PRIMARY_CLK 17
>
> #define CLK_HDMI_CEC 16
> #define CLK_SPDIF 17

This looks suspicious. What's the relationship of these clocks?

Rob

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