[PATCH 4/7] clk: imx: imx8qxp: Enable SCU and LPCG clocks for I2C in CM40 SS

Joakim Zhang
2020-02-17T03:26:43Z

Enable SCU and LPCG clocks for I2C in CM40 SS.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
---
drivers/clk/imx/clk-imx8qxp-lpcg.c | 12 ++++++++++++
drivers/clk/imx/clk-imx8qxp-lpcg.h | 3 +++
drivers/clk/imx/clk-imx8qxp.c | 4 ++++
3 files changed, 19 insertions(+)

diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.c b/drivers/clk/imx/clk-imx8qxp-lpcg.c
index 04c8ee35e14c..795909ecfba6 100644
--- a/drivers/clk/imx/clk-imx8qxp-lpcg.c
+++ b/drivers/clk/imx/clk-imx8qxp-lpcg.c
@@ -151,6 +151,17 @@ static const struct imx8qxp_lpcg_data imx8qxp_lpcg_lsio[] = {
{ IMX_LSIO_LPCG_PWM6_IPG_MSTR_CLK, "pwm6_lpcg_ipg_mstr_clk", "pwm6_clk", 0, LSIO_PWM_6_LPCG, 24, 0, },
};

+static const struct imx8qxp_lpcg_data imx8qxp_lpcg_cm40[] = {
+ { IMX_CM40_LPCG_I2C_CLK, "cm40_lpcg_i2c_clk", "cm40_i2c_clk", 0, CM40_I2C_LPCG, 0, 0, },
+ { IMX_CM40_LPCG_I2C_IPG_CLK, "cm40_lpcg_i2c_ipg_clk", "cm40_ipg_clk_root", 0, CM40_I2C_LPCG, 16, 0, },
+};
+
+static const struct imx8qxp_ss_lpcg imx8qxp_ss_cm40 = {
+ .lpcg = imx8qxp_lpcg_cm40,
+ .num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_cm40),
+ .num_max = IMX_CM40_LPCG_CLK_END,
+};
+
static const struct imx8qxp_ss_lpcg imx8qxp_ss_lsio = {
.lpcg = imx8qxp_lpcg_lsio,
.num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_lsio),
@@ -219,6 +230,7 @@ static const struct of_device_id imx8qxp_lpcg_match[] = {
{ .compatible = "fsl,imx8qxp-lpcg-adma", &imx8qxp_ss_adma, },
{ .compatible = "fsl,imx8qxp-lpcg-conn", &imx8qxp_ss_conn, },
{ .compatible = "fsl,imx8qxp-lpcg-lsio", &imx8qxp_ss_lsio, },
+ { .compatible = "fsl,imx8qxp-lpcg-cm40", &imx8qxp_ss_cm40, },
{ /* sentinel */ }
};

diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.h b/drivers/clk/imx/clk-imx8qxp-lpcg.h
index 2a37ce57c500..28ca730dd135 100644
--- a/drivers/clk/imx/clk-imx8qxp-lpcg.h
+++ b/drivers/clk/imx/clk-imx8qxp-lpcg.h
@@ -99,4 +99,7 @@
#define ADMA_FLEXCAN_1_LPCG 0x1ce0000
#define ADMA_FLEXCAN_2_LPCG 0x1cf0000

+/* CM40 SS */
+#define CM40_I2C_LPCG 0x60000
+
#endif /* _IMX8QXP_LPCG_H */
diff --git a/drivers/clk/imx/clk-imx8qxp.c b/drivers/clk/imx/clk-imx8qxp.c
index 5e2903efc488..d051073ff042 100644
--- a/drivers/clk/imx/clk-imx8qxp.c
+++ b/drivers/clk/imx/clk-imx8qxp.c
@@ -53,6 +53,7 @@ static int imx8qxp_clk_probe(struct platform_device *pdev)
clks[IMX_HSIO_PER_CLK] = clk_hw_register_fixed_rate(NULL, "hsio_per_clk_root", NULL, 0, 133333333);
clks[IMX_LSIO_MEM_CLK] = clk_hw_register_fixed_rate(NULL, "lsio_mem_clk_root", NULL, 0, 200000000);
clks[IMX_LSIO_BUS_CLK] = clk_hw_register_fixed_rate(NULL, "lsio_bus_clk_root", NULL, 0, 100000000);
+ clks[IMX_CM40_IPG_CLK] = clk_hw_register_fixed_rate(NULL, "cm40_ipg_clk_root", NULL, 0, 132000000);

/* ARM core */
clks[IMX_A35_CLK] = imx_clk_scu("a35_clk", IMX_SC_R_A35, IMX_SC_PM_CLK_CPU);
@@ -128,6 +129,9 @@ static int imx8qxp_clk_probe(struct platform_device *pdev)
clks[IMX_GPU0_CORE_CLK] = imx_clk_scu("gpu_core0_clk", IMX_SC_R_GPU_0_PID0, IMX_SC_PM_CLK_PER);
clks[IMX_GPU0_SHADER_CLK] = imx_clk_scu("gpu_shader0_clk", IMX_SC_R_GPU_0_PID0, IMX_SC_PM_CLK_MISC);

+ /* CM40 SS */
+ clks[IMX_CM40_I2C_CLK] = imx_clk_scu("cm40_i2c_clk", IMX_SC_R_M4_0_I2C, IMX_SC_PM_CLK_PER);
+
for (i = 0; i < clk_data->num; i++) {
if (IS_ERR(clks[i]))
pr_warn("i.MX clk %u: register failed with %ld\n",
--
2.17.1