Re: [PATCH 1/2] clk: qcom: add support for SM8350 DISPCC
From: Jonathan Marek
Date: Tue May 18 2021 - 08:31:24 EST
On 5/18/21 7:53 AM, Robert Foss wrote:
Hey Jonathan,
Thanks for submitting this.
On Thu, 13 May 2021 at 21:56, Jonathan Marek <jonathan@xxxxxxxx> wrote:
Add support to the SM8350 display clock controller by extending the SM8250
display clock controller, which is almost identical but has some minor
differences.
Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
---
drivers/clk/qcom/Kconfig | 4 +-
drivers/clk/qcom/dispcc-sm8250.c | 84 +++++++++++++++++++++++++++-----
2 files changed, 75 insertions(+), 13 deletions(-)
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 45646b867cdb..cc60e6ee1654 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -484,11 +484,11 @@ config SDX_GCC_55
SPI, I2C, USB, SD/UFS, PCIe etc.
config SM_DISPCC_8250
- tristate "SM8150 and SM8250 Display Clock Controller"
+ tristate "SM8150/SM8250/SM8350 Display Clock Controller"
depends on SM_GCC_8150 || SM_GCC_8250
help
Support for the display clock controller on Qualcomm Technologies, Inc
- SM8150 and SM8250 devices.
+ SM8150/SM8250/SM8350 devices.
Say Y if you want to support display devices and functionality such as
splash screen.
diff --git a/drivers/clk/qcom/dispcc-sm8250.c b/drivers/clk/qcom/dispcc-sm8250.c
index de09cd5c209f..1fcf8085a109 100644
--- a/drivers/clk/qcom/dispcc-sm8250.c
+++ b/drivers/clk/qcom/dispcc-sm8250.c
@@ -36,6 +36,10 @@ static struct pll_vco vco_table[] = {
{ 249600000, 2000000000, 0 },
};
+static struct pll_vco lucid_5lpe_vco[] = {
+ { 249600000, 1750000000, 0 },
+};
+
static struct alpha_pll_config disp_cc_pll0_config = {
.l = 0x47,
.alpha = 0xE000,
@@ -1039,6 +1043,7 @@ static const struct qcom_cc_desc disp_cc_sm8250_desc = {
static const struct of_device_id disp_cc_sm8250_match_table[] = {
{ .compatible = "qcom,sm8150-dispcc" },
{ .compatible = "qcom,sm8250-dispcc" },
+ { .compatible = "qcom,sm8350-dispcc" },
{ }
};
MODULE_DEVICE_TABLE(of, disp_cc_sm8250_match_table);
@@ -1051,19 +1056,76 @@ static int disp_cc_sm8250_probe(struct platform_device *pdev)
if (IS_ERR(regmap))
return PTR_ERR(regmap);
- /* note: trion == lucid, except for the prepare() op */
- BUILD_BUG_ON(CLK_ALPHA_PLL_TYPE_TRION != CLK_ALPHA_PLL_TYPE_LUCID);
- if (of_device_is_compatible(pdev->dev.of_node, "qcom,sm8150-dispcc")) {
I'm having a quick look at this patch, and of_device_is_compatible had
2 cases previously, sm8150 & sm8250. Now three cases (sm8150, sm8250 &
sm8350) are possible, but sm8150 & sm8250 have been lumped together.
Is this correct?
This patch doesn't change the behavior for sm8150/sm8250, which are
nearly identical. The check for qcom,sm8150-dispcc is just moved below.
(looking over it, I should've left it first and kept the diff smaller. I
had "lumped" sm8150/sm8250 because initially I had separate
"pll_configure" calls for sm8350 vs sm8150/sm8250).
- disp_cc_pll0_config.config_ctl_hi_val = 0x00002267;
- disp_cc_pll0_config.config_ctl_hi1_val = 0x00000024;
- disp_cc_pll0_config.user_ctl_hi1_val = 0x000000D0;
- disp_cc_pll0_init.ops = &clk_alpha_pll_trion_ops;
- disp_cc_pll1_config.config_ctl_hi_val = 0x00002267;
- disp_cc_pll1_config.config_ctl_hi1_val = 0x00000024;
- disp_cc_pll1_config.user_ctl_hi1_val = 0x000000D0;
- disp_cc_pll1_init.ops = &clk_alpha_pll_trion_ops;
+ /* SM8350 has _SRC clocks offset by 4, and some other differences */
+ if (of_device_is_compatible(pdev->dev.of_node, "qcom,sm8350-dispcc")) {
+ static struct clk_rcg2* const rcgs[] = {
+ &disp_cc_mdss_byte0_clk_src,
+ &disp_cc_mdss_byte1_clk_src,
+ &disp_cc_mdss_dp_aux1_clk_src,
+ &disp_cc_mdss_dp_aux_clk_src,
+ &disp_cc_mdss_dp_link1_clk_src,
+ &disp_cc_mdss_dp_link_clk_src,
+ &disp_cc_mdss_dp_pixel1_clk_src,
+ &disp_cc_mdss_dp_pixel2_clk_src,
+ &disp_cc_mdss_dp_pixel_clk_src,
+ &disp_cc_mdss_esc0_clk_src,
+ &disp_cc_mdss_mdp_clk_src,
+ &disp_cc_mdss_pclk0_clk_src,
+ &disp_cc_mdss_pclk1_clk_src,
+ &disp_cc_mdss_rot_clk_src,
+ &disp_cc_mdss_vsync_clk_src,
+ };
+ static struct clk_regmap_div* const divs[] = {
+ &disp_cc_mdss_byte0_div_clk_src,
+ &disp_cc_mdss_byte1_div_clk_src,
+ &disp_cc_mdss_dp_link1_div_clk_src,
+ &disp_cc_mdss_dp_link_div_clk_src,
+ };
+ unsigned i;
+ static bool offset_applied = false;
+
+ /* only apply the offsets once (in case of deferred probe) */
+ if (!offset_applied) {
+ for (i = 0; i < ARRAY_SIZE(rcgs); i++)
+ rcgs[i]->cmd_rcgr -= 4;
+
+ for (i = 0; i < ARRAY_SIZE(divs); i++) {
+ divs[i]->reg -= 4;
+ divs[i]->width = 4;
+ }
+
+ disp_cc_mdss_ahb_clk.halt_reg -= 4;
+ disp_cc_mdss_ahb_clk.clkr.enable_reg -= 4;
+
+ offset_applied = true;
+ }
+
+ disp_cc_mdss_ahb_clk_src.cmd_rcgr = 0x22a0;
+
+ disp_cc_pll0_config.config_ctl_hi1_val = 0x2A9A699C;
+ disp_cc_pll0_config.test_ctl_hi1_val = 0x01800000;
+ disp_cc_pll0_init.ops = &clk_alpha_pll_lucid_5lpe_ops;
+ disp_cc_pll0.vco_table = lucid_5lpe_vco;
+ disp_cc_pll1_config.config_ctl_hi1_val = 0x2A9A699C;
+ disp_cc_pll1_config.test_ctl_hi1_val = 0x01800000;
+ disp_cc_pll1_init.ops = &clk_alpha_pll_lucid_5lpe_ops;
+ disp_cc_pll1.vco_table = lucid_5lpe_vco;
+ } else {
+ /* note: trion == lucid, except for the prepare() op */
+ BUILD_BUG_ON(CLK_ALPHA_PLL_TYPE_TRION != CLK_ALPHA_PLL_TYPE_LUCID);
+ if (of_device_is_compatible(pdev->dev.of_node, "qcom,sm8150-dispcc")) {
+ disp_cc_pll0_config.config_ctl_hi_val = 0x00002267;
+ disp_cc_pll0_config.config_ctl_hi1_val = 0x00000024;
+ disp_cc_pll0_config.user_ctl_hi1_val = 0x000000D0;
+ disp_cc_pll0_init.ops = &clk_alpha_pll_trion_ops;
+ disp_cc_pll1_config.config_ctl_hi_val = 0x00002267;
+ disp_cc_pll1_config.config_ctl_hi1_val = 0x00000024;
+ disp_cc_pll1_config.user_ctl_hi1_val = 0x000000D0;
+ disp_cc_pll1_init.ops = &clk_alpha_pll_trion_ops;
+ }
}
+ /* note for SM8350: downstream lucid_5lpe configure differs slightly */
clk_lucid_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);
clk_lucid_pll_configure(&disp_cc_pll1, regmap, &disp_cc_pll1_config);
--
2.26.1