Hi Cristian,
On Fri, Jan 19, 2024 at 09:38:03PM +0200, Cristian Ciocaltea wrote:
> Add driver for the Rockchip HDMI/eDP TX Combo PHY found on RK3588 SoC.
>
> The PHY is based on a Samsung IP block and supports HDMI 2.1 TMDS, FRL
> and eDP links. The maximum data rate is 12Gbps (HDMI 2.1 FRL), while
> the minimum is 250Mbps (HDMI 2.1 TMDS).
>
> Co-developed-by: Algea Cao <algea.cao@xxxxxxxxxxxxxx>
> Signed-off-by: Algea Cao <algea.cao@xxxxxxxxxxxxxx>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
> ---
The driver has multiple sequences looking like this (this is just one
example of many):
> + hdptx_write(hdptx, CMN_REG0087, 0x04);
> + hdptx_write(hdptx, CMN_REG0089, 0x00);
> + hdptx_write(hdptx, CMN_REG008A, 0x55);
> + hdptx_write(hdptx, CMN_REG008B, 0x25);
> + hdptx_write(hdptx, CMN_REG008C, 0x2c);
> + hdptx_write(hdptx, CMN_REG008D, 0x22);
> + hdptx_write(hdptx, CMN_REG008E, 0x14);
> + hdptx_write(hdptx, CMN_REG008F, 0x20);
> + hdptx_write(hdptx, CMN_REG0090, 0x00);
> + hdptx_write(hdptx, CMN_REG0091, 0x00);
> + hdptx_write(hdptx, CMN_REG0092, 0x00);
> + hdptx_write(hdptx, CMN_REG0093, 0x00);
> + hdptx_write(hdptx, CMN_REG0095, 0x00);
> + hdptx_write(hdptx, CMN_REG0097, 0x02);
> + hdptx_write(hdptx, CMN_REG0099, 0x04);
> + hdptx_write(hdptx, CMN_REG009A, 0x11);
> + hdptx_write(hdptx, CMN_REG009B, 0x00);
Instead of the repetitive calls to regmap_write, it's better to do
it like this:
static const struct reg_sequence some_init_seq[] = {
REG_SEQ0(CMN_REG0087, 0x04),
REG_SEQ0(CMN_REG0089, 0x00),
REG_SEQ0(CMN_REG008A, 0x55),
REG_SEQ0(CMN_REG008B, 0x25),
REG_SEQ0(CMN_REG008C, 0x2c),
REG_SEQ0(CMN_REG008D, 0x22),
REG_SEQ0(CMN_REG008E, 0x14),
REG_SEQ0(CMN_REG008F, 0x20),
REG_SEQ0(CMN_REG0090, 0x00),
REG_SEQ0(CMN_REG0091, 0x00),
REG_SEQ0(CMN_REG0092, 0x00),
REG_SEQ0(CMN_REG0093, 0x00),
REG_SEQ0(CMN_REG0095, 0x00),
REG_SEQ0(CMN_REG0097, 0x02),
REG_SEQ0(CMN_REG0099, 0x04),
REG_SEQ0(CMN_REG009A, 0x11),
REG_SEQ0(CMN_REG009B, 0x00),
};
regmap_multi_reg_write(hdptx->regmap, some_init_seq, ARRAY_SIZE(some_init_seq));
> +static const struct of_device_id rockchip_hdptx_phy_of_match[] = {
> + { .compatible = "rockchip,rk3588-hdptx-phy", },
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, rockchip_hdptx_phy_of_match);
> +
> +static struct platform_driver rockchip_hdptx_phy_driver = {
> + .probe = rockchip_hdptx_phy_probe,
> + .driver = {
> + .name = "rockchip-hdptx-phy",
> + .pm = &rockchip_hdptx_phy_pm_ops,
> + .of_match_table = of_match_ptr(rockchip_hdptx_phy_of_match),
Remove of_match_ptr(). It's a nop, since the driver depends on OF.
Greetings,
-- Sebastian
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